Answer and Explanation:
Available data:
Two genes w and sn are X-linked and 25 map units apart. A female fly of genotype w+ sn+/w sn is crossed to a wild-type male w+ sn+ Y.Cross:
Parental) w+ sn+/w sn x w+ sn+ / Y
Gametes) w+sn+ (parental)
w+sn (recombinant)
w sn+ (recombinant)
w sn (parental)
Punnet square)
w+sn+ w+sn wsn+ wsn
w+sn+ w+sn+/w+sn+ w+sn+/w+sn w+sn+/wsn+ w+sn+/wsn
Y w+sn+/Y w+sn/Y wsn+/Y wsn/Y
F1) 50% of the progeny will be males.
50% of the progeny will be females.
There are two possible answers, that depends on how we might analyze the situation:
If we consider the whole progeny (males + females), the proportion of male individuals w+sn/Y will be 1/8=0.125=12.5%This is:
8 ------- 100% of male and female individuals
1 ------- X = 12.5% of w+sn/Y individuals
From the 8 genotype possibilities, there is only one possible w+ sn/Y genotype.
But if we consider only the male progeny, the 50% of the total progeny that belongs to males, represents 100% of male individuals. In this case, the proportion of male individuals w+sn/Y will be 1/4=0.25=25%This is:
4 ------- 100% of males
1 ------- X = 25% of w+sn/Y males
From the 4 male genotype possibilities, there is only one possible w+ sn/Y genotype.
The speckled chicken on the right results from a cross between a black and white chicken. Explain what type of inheritance this would be, and draw a punnett square to show how this would happen.
Answer:
- Codominance
- 100% speckled chicken
Explanation:
This gene inheritance is called codominance, where both alleles can be expressed. In these cases, heterozygote individuals instead of showing an intermediate phenotype, express both alleles. Their phenotype is an additive expression of their parents' genes.
When two individuals, homozygous for a certain trait, are crossed they produce heterozygous individuals that express both alleles equally.
A typical example of codominance is the case of speckled chicken, the product of the cross of a black individual with a white individual. Black chickens (BB) only have this gene for feather color, while white chickens (WW) only have the gene for white feathers. When they cross, their progeny will have both genes (BW), and both of them will be expressed as speckled feathers.
Cross:
Parental) BB x WW
Black White
Gametes) B B W W
Punnet square) B B
W BW BW
W BW BW
F1) 100% BW, speckled individuals.
Which of the following statements regarding transcellular transport is NOT true? The movement of glucose into the blood is mediated by GLUT2 transporters. Tight junctions are specialized regions of the plasma membrane that mediate separation of the apical and basolateral membranes. Transcellular transport moves glucose across epithelia asymmetrically. The Na+ concentration gradient across the membrane is the only gradient required to drive uptake of glucose from the intestine.
Answer:
Tight junctions are specialized regions of the plasma membrane that mediate separation of the apical and basolateral membranes.
Explanation:
Transcellular Transport is the pathway in intestinal epithelial cells where particles move from one cell to another depending on the physicochemical properties of the particles passing both the the apical membrane and basolateral membrane. Tight junctions create a paracellular barrier in epithelial and endothelial cells protecting them from the external environment
What are ways of applying physics in post harvest practices
Answer:
Explanation:
post harvesting process occurs after harvesting to reduces losses of agricultural produce.
Various machines and equipment are used in post harvest process and it requires expertise such as physics to help understand how best the equipment can function and give the desired result.
Some of the appliances are built by physics and can be modified by them.
The study of moisture content in relation to equipment been built and how it can be maintained is an example of understanding work in physics.
Heat and temperature are on of the chief factor afternoon post harvest losses that is managed by physics to produce and equipment that can further give the best result and also ensure safety.
Agrophysics is a branch of physics that links agriculture with physics.
Answer:
Limiting hazards to agricultural objects.
It help in increase efficiency of water and chemicals during storage.
It decrease biomass losses during harvest and storage.
It is use to store harvested crops to prevent loss and spoilage.
Transport harvest crops.
Explanation:
Agrophysics is a branch of science that deals with the application of physics knowledge in agriculture and post harvest practices. Agrophysics has okay a major role in agriculture and it is efficient to increase agricultural yield. It is very important in increasing efficiency of use of water and chemicals in agriculture and decreasing biomass losses during harvest, transport, storage, and processing.
Trace the flow of carbon from the atmosphere to glyceraldehyde-3-phosphate within a CAM plant. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Terms can be used once, more than once, or not at all.
CO2 (in cytosol)
a. stomata
b. Calvin cycle
c. malate (in vacuole)
d. oxaloacetate (in cytosol)
e. bicarbonate
f. malate (in cytosol)
g. mesophyll cell
h. glyceraldehyde-3-phosphate
Answer:
Explanation
mesophyll cell----- calvin cycle
Calvin cycle-----glyceraldehyde-3-phosphate
Cam plants mean crassulacean metabolic pathway.
This plant undergoes photosynthesis by seperation in time in other to reduce photorespiration.
Cam plants opens their stomata at nights, absorb Carbondioxide and store as oxaloacetate with the help of phosphoenol pyruvate carboxylase an enzyme that helps ferry co2 into the cell, oxaloacetate is then converted into malate and other organic acid and then stored in the vacoule. In the day the stomata closes and the stored malate is released from vacoule are broken down into pyruvate and CO2 in the mesophyll cell. The CO2 is then used in the calvin cycle to produce the G3P while pyruvate goes back to the cycle.
The light-independent reactions of photosynthesis, also known as the Calvin cycle, must repeat six times in order for a cell to have enough material to construct a complete glucose molecule. A variety of molecules are used and produced during this process.Sort the molecules below into three categories; molecules brought in and used in six turns of the Calvin cycle, molecules produced during six turns of the Calvin cycle that leave the cycle, and molecules used and regenerated within the Calvin cycle during six turns.Molecules:a. 10G3P b. CO2 c. 12NADPH d. 18ADP e. 6RuBP f. 2G3P g. 18ATP h. 12NADPH^+ + 12H^+
Answer:
Molecules brought in: 3CO2, 9ATP, 6NADPH
Molecules Produced: 1G3P, 9ADP, 6NADP+ +H+
Molecules used and Regenerated: 3RuBP, 5G3P
Explanation:
1. Molecules brought in and utilized in the light-independent reaction or Calvin cycle:
-CO2 from outside the cell
-Molecules take energy from the light-dependent reactions
2. Molecules produced during the light-independent reaction or Calvin cycle that leave the cycle:
-Energy-carrier molecules that have lost some energy\
-3-carbon molecules that store energy
3. Molecules produced in the cytoplasm from the end products of the Calvin cycle:
-Organic molecules such as glucose
Thus, Molecules brought in: 3CO2, 9ATP, 6NADPH
Molecules Produced: 1G3P, 9ADP, 6NADP+ +H+
Molecules used and Regenerated: 3RuBP, 5G3P
25
The basic unit of life is a(n)
Answer:
Air, water life without these is nothing
Answer:
A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms
Explanation:
Which of these particles is able to pass freely through a cell membrane?
O A. A nucleic acid molecule
B. A polysaccharide molecule
O c. A disaccharide molecule
O D. A carbon dioxide molecule
Answer:
D
Explanation:
The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
In sheep, coat color is influenced by two genes. Gene A influences pigment production, while gene B produces black or brown pigment. If two heterozygous white sheep resulted in 12 white sheep, 3 black sheep, and 1 brown sheep, which genotype(s) of the white sheep explain this data?
Answer:
Dominant epistasis best explains this ratio of 12:3:1.
Genotype(s) AABB, AABb, AAbb, AaBB, AaBb and Aabb explain white phenotype of sheep.
Explanation:
It is a clear case of dominant epistasis which is in turn a result of gene interaction. In dominant epistasis, dominant allele of one gene masks the expression of another gene which is present at different locus.
When we will cross two heterozygous sheep AaBb x AaBb, progeny with following genotypes will be produced:
1- AABB - White
2- AABb - White
1- AAbb - White
2- AaBB - White
4- AaBb - White
2- Aabb - White
1- aaBB - Black
2- aaBb - Black
1- aabb - brown
In this case, dominant 'allele A' of gene A will mask the expression of gene B. This is the reason why genotype AABB, AABb, AAbb, AaBB, AaBb and Aabb are producing white phenotype. So in total, 12 sheep will produce white phenotype.
But when dominant 'allele A' is absent, then only gene B will be able to express if it is present in dominant form. This is the reason why aaBB and aaBb are producing black phenotype because here dominant allele A is absent and recessive allele a will not be able to mask the expression of gene B because gene B has dominant allele here i.e. BB and Bb. So 3 sheep will produce black phenotype.
But when when dominant 'allele A' is absent and gene B is in recessive form i.e. bb then a third phenotype will be produced which is brown. This is the reason why aabb will produce brown color. So only 1 sheep will produce brown phenotype.
given a container of a solution of 5% hcl all samples tested from this same bottle will have the same mass ratio of hydrogen to chlorine. this application of the law of
Answer:
The law of conservation of mass.
Explanation:
This law talks about that the mass is not lost during the reactions, but is maintained.
Answer:
ITS NOT CONVERSATION OF MASS. ITS CONSTANT COMPOSITION
Explanation:
What type of bug is this?
Answer:It looks like a beetle
Explanation:
Each trait of a plant is determined by _____.
A) an allele
B) one gene
C) a pair of genes
D) one dominant gene
Answer:
c. a pair of genes
Explanation:
Answer:
C) a pair of genes
Explanation:
C should be correct because each trait is controlled my multiple genes. It is very rare to see one thing being controlled strictly by one gene, rather multiple things work together to produce the traits. Living things are very amazing if you dive deep into their DNA level,
What is the correct order of processes in the accretion of planetesimals?
1)Masses of matter form around dust grain, masses of matter collide, and atoms and molecules are added to dust grain.
2)Masses of matter collide, masses of matter form around dust grain, and atoms and molecules are added to dust grain.
3)Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.
4)Masses of matter collide, atoms and molecules are added to dust grain, and masses of matter form around dust grain.
Answer:
The correct option is 3. Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.
Explanation:
Two theories explain how planets get formed. One of them is The gravitational instability, and the other one is the Planetesimal Hypothesis.
The planetesimal hypothesis says that a planet formation is a process in which dust particles and gas collide and get stick together in a process known as coagulation. This makes place to grains production. These grains enhance their sizes up to a point in which they form bodies big enough to be called planetesimals. When planetesimals are formed, they start a gravitative interaction with other planetesimals of different sizes, and by collision, they form bigger planetesimals that accrete the smaller ones and end up forming a proto-planet. Planets and giant planets get formed by accretion of solid planetesimals. The term accretion refers to the solids agglomeration to form bigger objects, such as planets.
Answer:
c
Explanation:
took the quiz
What is the shape of an Acid-fast bacteria?
Why is a flask wider on the bottom than on the top?
Certain natural compounds and drugs being tested as treatments for diabetes lower glucose transport in intestinal or kidney epithelial cells, and thereby lower blood sugar levels. Addition of one such drug to the apical medium yields transport similar to that in Treatment 5, whereas its addition to the basolateral medium yields transport similar to that in Treatment 4. What is the most likely target of this drug, and what is the effect on this target?
Answer:
Lowering serious blood glucose concentration and avoiding glycemic spikes (target).
The consequences of this seriously that by maintaining glycemia and glycemic levels the patient does not undergo glycosidization of cellular components, the first line of immune defense is not affected, blood vessels are not affected, affected cardiac pathologies are avoided, no Coagulation, scarring, and collagen synthesis are impaired.
Explanation:
The increase in blood glucose is called glycemic peak or high blood glucose, this is what happens in diabetic patients.
These drugs at the intestinal level, generate a decrease in the speed of glucose absorption, thus avoiding glycemic spikes or high blood glucose levels, therefore maintaining constant values that are easier for the administration of insulin via parenteral or oral hypoglycemic drugs.
This similar effect is found in sweeteners such as stevia, that is why it is recommended in diabetics, the difficulty of these drugs or these chemicals is that since the absorption of glucose is more lethargic, the glucose remains more in the intestines and drags masses of water or allows aqueous diffusion processes into the lumen of the intestine, thus promoting the appearance of instestinal breakdowns such as diarrhea.
That is why you have to be vigilant with hydration in these specific cases.
Diabetics having high glucose generate: cardiac, immunological, scarring, vascular alterations, obesity risks.
In an accident with farm machinery, Mr. Roque had his left arm severed just below the elbow. Mrs. Roque stopped the bleeding, called for an ambulance, and packed the severed arm in ice for the EMTs to take to the hospital. Will Mr. Roque ever be able to move the fingers of his left hand again? What structures must be reattached, and what has to happen?
Answer:
The mentioned case of arm severing is considered as major surgery, and the restructuring of the severed arm is only possible when Mr. Roque will reach the hospital within four to five hours of the incident, also known as the window period.
After performing the surgery, Mr. Roque may regain movement in the arm to some extent after performing certain kinds of exercises, however, he may not feel the sensations in the fingers of his left hand again. The entire process of healing of the severity may take about two to three years, and in certain cases, the body fails to heal completely, and the affected limb may lose its function entirely.
In the given case, the structures that are required to get reattached are the muscles of the forearm and the blood vessels and the nerve supply to the affected region. The systematic arrangement of these structures is done with the help of surgery. However, after the surgery, the patient is recommended to perform certain kinds of hand and finger muscle exercises so that the functioning of the arm get regain slowly and gradually.
when a true breeding plant with purple kernels was crossed with a true breeding plant with yellow kernels the f1 cob had kernels that were all purple.
a what is the dominant triat in this cross?How can u tell?
b write down the phenotypes of the parents of f1 individuals using appropriate symbols
Answer:
fffffefwefwefwefwefwefwef
Explanation:
fwefwefwefiowejfiwejflkfjsdkljfkldsjfsdkljfksdljf
As global warming continues the oceans absorb more of the earths heat. What term describes the ocean as a storage location for this heat
Answer:
do you have any options for this question?
Imagine that you had two large cups of coffee before you left for work. Now you are on the highway, there is an accident ahead, and you have been sitting in traffic in your car for two hours. What is the condition of the rugae in your urinary bladder
Answer:
The rugae would have stretch and allow the bladder to expand.
Explanation:
Rugae different ridges that are formed from the folding of urinary bladder. This rugae allow the expansion of stomach or bladder when we consume food or drinks.
When two you has two cup of coffee and u sit for two hours, the rugae will make the urinary bladder to expand as it is fills because it would of fold.
"Assume that a man and a woman are phenotypically normal, but the woman is heterozygous for a pericentric inversion on chromosome 8. The man is karyotypically normal. What is the probability that this couple's child will inherit a duplicated or deficient chromosome 8 that results from crossing over within this pericentric inversion
Answer:
Explanation:
Pericentric inversion results in chromosome have extra copies of some genes while some genes do not have copies. It can result in slow growth rate.
If a man is heterozygous of pericentric and a woman is heterozygous of pericentric although they do not show symptoms there is 25% chance that their offspring will have it and 50% chance of them being a carrier.
T t × T t will give TT T t T t t t
If the father is not heterozygous of it but the mother is heterozygous they have 0% chance of having it and 50% chance of being heterozygous a carrier of the disorder
T t × TT will give TT TT T t T t
1 point
The topsoil covering an area of land was washed away by
rain. The land was most likely-
O steep, without vegetation
O steep, with vegetation
O flat, without vegetation
O flat, with vegetation
1 point
Answer:
steep, without vegetation
What is each half of a chromosome called?
Answer:
Chromatid.
Explanation:
A chromatid is half of a chromosome.
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What are one benefit and one consequence of building a desalination plant? Would a desalination plant be beneficial to your local area? Explain why or why not.
Answer:
Desalination plants, also known as desalination plants, are industrial facilities for desalination, generally of the sea or salty lakes, to obtain drinking water.
Explanation:
The benefits are clear: having clean water in places where it is scarce. But, on the disadvantages side, it is a process that requires a lot of energy and is therefore expensive. In addition, desalination plants have an impact on marine ecosystems that must be assessed, they increase the temperature of sea water and reduce the amount of oxygen in the water, causing serious damage to aquatic life.
Answer:
a. Dams help make irrigation possible so that farming can occur in dry regions .
Explanation:
Your Turn For each of the following atoms or molecules, determine whether they will cross a plasma membrane (if following their concentration gradient) by simple diffusion or by facilitated diffusion. Then, briefly explain your reasoning. O2 (oxygen gas) crosses the plasma membrane bydiffusion, because Glucose crosses the plasma membrane by diffusion, because Water crosses the plasma membrane by diffusion, because Nat (sodium ion) crosses the plasma membrane by diffusion, because Cholesterol crosses the plasma membrane by diffusion, ーーーーーーーーーーーーー because Which of these atoms or molecules require facilitated diffusion to cross a plasma membrane, but are able to simply diffuse across a dialysis tubing membrane?
Answer:
1. Oxygen moves through the plasma membrane by simple diffusion, as oxygen will be utilized fast for cell metabolism that will result in the concentration of oxygen inside a cell will always be less
2. Although the concentration of glucose is more outside a cell it cannot cross the plasma membrane by simple diffusion and crosses the plasma membrane by facilitated diffusion as glucose is a large and more polar molecule. A carrier protein called glucose transporter helps in this movement.
3. Water crosses the plasma membrane by simple diffusion as it has a small size.
4. Na+ ions are charged ions and cannot pass the plasma membrane by simple diffusion and they are carried in with the help of sodium pumps that are made up of certain membrane proteins by facilitated diffusion.
5. Cholesterol crossed the plasma membrane by facilitated diffusion as it is a non polar molecule and is diffused through channels.
Which is a function of nucleic acids? create movement provide structure store genetic information fight disease
Answer:
store genetic information
Storage of genetic information is the main function of nucleic acids. As the nucleic acid contains genes that codes for certain characters of the humans that are being inherited from parents to offspring. The correct option is C.
What are nucleic acids?Nucleic acids are chemical compounds that arise innately and are the primary information-carrying substances in cells.
They are extremely significant in guiding protein synthesis. Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are indeed the two primary kinds of nucleic acids.
There are many organisms that contains RNA as a genetic material, and some have DNA as genetic material.
Nucleic acids play an important role in the stockpiling and expression of genomic information. DNA, or deoxyribonucleic acid, encodes the information that cells require to produce proteins.
Thus, the correct option is C.
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Assume that the import of a particular amino acid across the plasma membrane is observed (1) to occur only down its concentration gradient and (2) to slow when a different but similar amino acid is added to the extracellular fluid. The movement of the amino acid through the membrane is most likely by
Answer:
The correct answer is - facilitated diffusion.
Explanation:
Facilitated diffusion is a form of facilitated transport of molecules such as amino acid, glucose, and others through the plasma membrane involving the passive or indirect movement of molecules along their concentration gradient, which is led by the presence of another molecule normally a pore or channel made up of integral protein.
Facilitated diffusion depends on several factors such as the size of molecules, type of molecules, similarity of molecules to extracellular matrix or fluid that slow or fast the diffusion process.
Thus, the correct answer is - facilitated diffusion.
NASA’s Kepler mission found evidence of several potentially habitable exoplanets, raising the possibility that life may have evolved independently outside of our solar system. If NASA found a novel lifeform, we would expect it to use energy molecules based on similar principles as lifeforms on Earth. The organism would likely use molecules with _____________ bonds. It might use two separate molecules, one serving as a rapidly utilizable energy currency and another molecule serving as long-term energy storage
Answer:
The organism would likely use molecules with Covalent bonds.
Explanation:
A covalent bond is a chemical bond that is prevalent in most matter and facilitates the sharing of electron pairs between atoms. Molecular Bond is another word for a covalent bond.
Molecular bonds are a repository of potential energy. This type of energy is also referred to as Chemical Energy.
Covalent bonds may take the form of single, double, and triple bonds. In order to separate any pair of bonded atoms, energy is required. The more strong a covalent bond is, the higher the amount of energy that is required to break it.
Cheers!
Draw a carbon monoxide molecular
Answer:
C==O
Explanation:
What test determines if a cell membrane has cholesterol and linoleic acid present?
Answer:
true?
I need more details to this question
Explanation:
BEFORE equilibrium has been reached in this container: (Circle a letter for each) 1. Movement of glucose across the membrane in this container can best be described as A. Solution A to Solution B B. Solution B to Solution A C. both directions D. neither direction
Hello. You forgot to put the image so that this question can be answered, but I will describe what the image shows.
The image shows two types of "cups" that have a type of connection between the two. In cup A there is 1 mole of glucose and 1 mole of fructose. In cup B there is 0.1 mol of glucose and 1.5 mol of fructose.
Answer:
A. Solution A to Solution B
Explanation:
Balance is achieved when the "cup" with the lowest concentration of glucose receives glucose from the "cup" with the highest concentration, to the point that the two glasses establish equal concentrations of glucose between them.
We know that cup B has a lower concentration of glucose, which indicates that the movement of this solute was from cup A towards cup B. With this we can conclude that the letter A is the correct answer.