un caballo negro de antepasados desconocidos fue apareado con cierto numero de yeguas de color rojo deraza pura, estos apareamientos dieron 20 descendientes de colo rojo y 25 de color negros
Pregunta completa: un caballo negro de antepasados desconocidos fue apareado con cierto numero de yeguas de color rojo de raza pura, estos apareamientos dieron 20 descendientes de colo rojo y 25 de color negros.
A) cual de dichos caracteres fenotipicos es mas probable que este causado por un homocigoto recesivo?
B) segun su hipotesis cuantos individuos de cada clase habrian esperado
Answer:
A) El color rojo es causado por un genotipo homocigota recesivo
B) Se habrían esperado 22.5 individuos negros y 22.5 individuos rojos, que juntos sumarian un total de 45 individuos.
Explanation:
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Some human proteins that are used in therapeutics, such as insulin, can be produced by genetically modified yeast. Though genetically modified bacteria can also be used to produce these therapeutics, yeast is considered by many to be the superior type of organism to use for this purpose. What is the advantage of using yeast cells instead of bacterial cells when expressing human proteins?
a. Yeast cells grow faster than bacterial cells when expressing human proteins.
b. Yeast cells splice mRNA in an identical manner as human cells.
c. Yeast cells fold and modify proteins in a manner similar to human cells.
d. Yeast cells use the same genetic code for specifying amino acids as human cells.
Answer:
The correct answer is c.Yeast cells fold and modify proteins in a manner similar to human cells.
Explanation:
Yeasts are known as one of the most useful microorganisms to humans due to the best known eukaryotic microorganisms.
As yeasts are eukaryotes like humans and hence have the system for post translational modification that is needed for proper folding of eukaryotic genes. Due to this fact and advantages yeast is considered by many to be the superior type of organism to use for for producing proteins.
Thus, the correct answer is C. Yeast cells fold and modify proteins in a manner similar to human cells.
Which of the following is a correct comparison between RNA polymerase holoenzyme that functions in transcription and the primase enzyme that functions in DNA replication?
A) Both enzymes synthesize RNA
B) Both enzymes are bound by sigma factor
C) Both enzymes shnthesize DNA
D) Both enzymes are composed of RNA
Answer:
Option A
Explanation:
RNA polymerase is an enzyme that aids in the transcription of DNA into RNA during transcript in the nucleus.
Primase is an enzyme that synthesizes short RNA sequences called primers. These primers serve as a starting point for DNA synthesis during replication as the DNA polymerases cannot begin the synthesis of the new strand, they only extend it after primase begins it.
And since primase produces RNA molecules, the enzyme can be said to be a type of RNA polymerase.
What is a recombination? How is it different from mutation
What kind(s) of cells can develop from totipotent stem cells?
O A. Only cells that are identical to the original stem cell
B. Only cells that are closely related to the original stem cell
C. Any cells of the human body, but not cells of the placenta
D. Any cells of the human body or the placenta
Answer:
D.
Explanation:
Totipotent cells can make any of the 220 cell types in an embryo, as well as the cells found in a placenta!
Any cells of the human body or the placenta can develop from totipotent stem cells. Therefore, the correct option is D.
Totipotent stem cells have the unusual ability to differentiate into any type of human body cell, including placental cells. They have the ability to generate all types of cells, including endoderm, mesoderm, and ectoderm, the three basic germ layers. Because of their potential for development, totipotent stem cells can produce both extra-embryonic and embryonic tissues. Although cells produced from totipotent stem cells can differentiate into any cell type, due to maturation and specialization processes, they are not always identical to the original stem cell.
Therefore, the correct option is D.
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the number of possible genetically different gametes for an organism equals 2n where n is the number of pairs of chromosomes if an organism has six pairs of chromosomes how many different gametes ca it produce
A. 64
B. 256
C. 32
D. 128
Answer:
64
Explanation:
A woman with hemophilia and a man without hemophilia are expecting a baby boy. What are the chances that their son will also have hemophilia?
Answer:It’s a 50/100 chance
Explanation:
Rafael models a longitudinal wave using a coiled-spring toy. If he wants to model a longitudinal wave that carries more
energy, how should he move the end of the spring?
:::
O side to side, using larger motions
O side to side, using smaller motions
O forward and back along the spring, using larger motions
O forward and back along the spring, using smaller motions
Answer:
O forward and back along the spring, using larger motions
Explanation:
Longitudinal wave that carries more energy, he move the end of the spring by pushing the spring forward and backward directions using larger motion that creates two regions in the spring, the crowded area known as compression and more distance between parts of the spring known as rarefaction. If there is more compression in the spring so there is a lot energy present in the spring. So it is only possible when using larger motions in the spring.
Answer:
C
Explanation:
edge 2023
A mutation of the proteolytic enzyme Trypsin results in a stable covalent bond between one of the catalytic amino acids of the protease and its protein substrate. Which of the following are probably true?
a. The enzyme would become inactive.
b. The enzyme and substrate would be stuck together.
c. The delta-G of the proteolysis reaction would change.
d. The rate of the catalyzed reaction would increase.
b. The enzyme and substrate would be stuck together.
The frequency of purple pollen cones is 0.34 in a population of Virginia pine (Pinus virginiana). In the same population, the frequency of four needles per fascicle is 0.67.
If these two traits are independent, what is the probability that a single pine tree has both purple pollen cones and four needles per fascicle? (calculate to 2 decimals)
Answer: P(p and f) = 0.23
Explanation: The frequency of a specific trait is also the probability of that trait appearing in that population. So:
Probability of purple pollen cones: P(p) = 0.34
Probability of four needles per fascicle: P(f) = 0.67
Using multiplication rule:
P(p and f) = P(p)*P(f)
P(p and f) = 0.34*0.67
P(p and f) = 0.23
The probability of having both purple and four needles is 0.23
The animation demonstrates several traits that are characteristic of the primate order. In particular, it shows how primates have several features that enhance their vision and their sense of touch and dexterity. These characteristics make primates particularly well adapted to what type of environment?
Answer:
Arboreal Habitats.
Explanation:
The word arboreal has its roots in the Latin word arboreus, which means "relating to trees."
The word arboreal speaks to not just to animals that are adapted to the tree environment, but also to all other things that look like or take the branching form of a tree. An example would be a diagrammatic representation of one's family geology.
Examples of animals that live on trees are:
KoalaMajority of the Avian Species (especially those that can fly)Sloths etc.Cheers!
A 4-year-old child arrives at the clinic with his mother. The mother tells you that she recently moved in with her new boyfriend and her son has been very quiet lately
Which describes bedrock? consists of solid rock lies directly above the soil layer does not contain weathered rock forms from decomposed material
Answer:
consists of solid rock
Explanation:
Bed rock are solid rock material usually below the soil surface.
They are found at the ocean floor under sediment and other solid materials. Saprolite are bed rocks that have been weathered they are found above the bed rock overlaining it,
saprolite have different composition because it has gone through chemical weathering.
Above saprolite are soil and other loosed particle.
when the depth and structure of a bed rock is determined it help tell about the history of a place.
Answer:
a
Explanation:
QUESTION 20 "Nitrous acid causes all possible transitions (A<-- -->G, C<-- -->T). If a protein has an alanine at position 65, what amino acid(s) would be likely to replace alanine as a result of nitrous acid mutagenesis
Answer:
Explanation:
Nitrous acid mutation occurs when a Nitrogenous base is replaced by a keto group.
Alanine is replaced by hypoxanthine,
Cytocine is replaced b Uracil
Guanine is replaced by Xanthine.
Nitrous mutation often affects Adenine, Cytocine and guanine. The Nitrogenous base is changed into another substance(keto group)
Alanine at position 65 would be replace by hypoxanthine a keto group which is a form of nitrous mutation.
Other forms of amino acid mutation
Mutation of amino acid nitrogenous base can either be transition or transversion.
Transition is the substitution of a purine base by another purine base. Since purine are Adenine and Guanine
Pyrimidine is cytocine and thymine or Uracil. Adenine can be substituted for by guanine or guanine by adenine
E.G A - G now G - A where Guanine substitute Adenine
Whole transversional substitution can also occur which involve a purine been substitued for by a pyrimidine or pyrimidine by a Purine.
A - G
Now C-G where cytosine substitute Adenine.
why during cold weather a person urinate more frequently and urine is more diluted?
Explanation:
Cold weather will result in your body needing to filter more blood than normal as blood is rushing to your vital organs at a higher frequency. This results in you having to pee more often.
In which would you be most likely to find plants and animals that are adapted to survive in extremely cold temperatures
This question is incomplete because part of the content is missing; here is the complete question:
In which biome would you be most likely to find plants and animals that are
adapted to survive in extremely cold temperatures?
A. Desert
B. Savanna
C. Rain forest
D. Tundra
The correct answer is D. Tundra
Explanation:
Tundra biome is one of the coldest biomes on Earth, indeed, the temperature in this biome can be as low -50° C in some zone. At this extremely cold temperature, animals and plants have adaptations to survive in these climatic conditions. For example, animals such as the arctic hare or the polar bear that are found mainly in the tundra biome have thick fur that helps them keep body temperature despite low temperatures in their environment. Thus, the biome in which you would most likely find species adapted to extremely cold temperatures is the Tundra.
Consider that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle. You can calculate the amount of time spent in each phase of the cell cycle form the percentage of cells in that stage.
Percentage of cells in stage X 1,440 minutes = ________ minutes of cell cycle spent in stage.
Answer: Hope this helps you :)
To calculate the time spent on each stage of the cell cycle, we need to know the total time required to complete the cycle and the percentage of cells that are in that stage. Then, take the product of both values.
--------------------
According to the statement,
The percentage of cells in a stage X 1,440 minutes = Time in minutes of cell cycle spent in the stage.
So, to know how much time is spent in each stage of the cell cycle, we need to know the time it takes for a cell to complete the whole cell cycle, and how many cells there are.
We already know that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle.
Now, we should count the number of cells. Since I do not have a slide, I will assume that there are at least 50 cells, and from that 50 cells present in the slide, 25 are in the same stage. Let us say that the 25 cells are in the prophase.
So, considering a total number of 50 cells (100%), 25 cells equals 50% of the total.
Now, we know that
Time required to complete the cell cycle = 1440 minutesPercentage of cells in the prophase = 50%
Minutes spent in prophase = % of cells in prophase x 1440 minutes
Minutes spent in prophase = 50% x 1440 minutes
Minutes spent in prophase = 0.5 x 1440 minutes
Minutes spent in prophase = 720 minutes
According to this example, cells spend 720 minutes of their time in the prophase.
Now, I suggest you count how many cells do you have in your slide, and recognize how many are in each of the stages. Then you will be able to calculate the real-time spent per stage.
--------
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A rat population has an average weight gain between weeks 2 and 4 of 10 grams, and the narrow-sense heritability of the weight gain between 2 and 4 weeks is 25%. What average weight gain would be expected among the offspring of parents whose average gain was 15 grams?
Answer:
The correct answer is - 11.25
Explanation:
Given:
Average weight gain between weeks 2 and 4 = 10 grams
The narrow-sense heritability of the weight gain between 2 and 4 weeks
= 25%
Then
Average weight gain would be expected among the offspring of parents whose average gain was 15 grams-
by the formula:
Average weight gain between weeks + (h) (Average weight gain between weeks - parents average gain )
= 10 + 0.25 (15-10)
= 10 + 0.25 (5)
= 10 + 1.25
= 11.25
Thus, the correct answer is - 11.25
Organize the levels of organization in the human body from the smallest (left) to the largest (right) component.
organ
organ system
cell
tissue
Answer:
Cell, Tissue, Organ, Organ System
Explanation:
Cell, tissue, organ and organ system are the levels of organization in the human body from the smallest to the largest component.
What is cell?Cell is the basic structural and functional unit of an organism.
What is tissue?Tissue is formed by the group of cells.
What is organ?Organ is formed by the group of tissues.
What is organ system?Organ system is formed by the group of organs.
What are levels?Levels are the arrangements.
What is organization?Organization is the hierarchy of biological systems.
Therefore those are the organization levels in the human body.
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After duplication, at what point does a cell become two cells with identical DNA? starting in prophase end of anaphase end of cytokinesis
Answer:
The correct answer is - end of cytokinesis.
Explanation:
Cytokinesis :- a procedure that partitions the cytoplasm and plasma layer of a cell, bringing about two indistinguishable cells that contain their own DNA, nucleus, nuclear membrane, and plasma membrane.
During the last phase of the cell cycle, cytokinesis permits the cell to complete the process of isolating, making two cells with indistinguishable duplicates of DNA
The cell squeezes in the equator area with the assistance of a ring of contractile protein filaments. The formed cleavage furrow develops until the two cells squeeze off totally.
Thus, the correct answer is - end of cytokinesis.
Answer:
end of cytokinesis
Explanation:
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is a/an:__________.
a. synthetic drug
b. antibiotic
c. antimicrobial drug
d. competitive inhibitor
Answer:
antimicrobial drugs
Explanation:
An antimicrobial is a substance that kills or inhibits the growth of microorganisms such as bacteria, fungi, or protozoans.
Answer:
[tex]\boxed{Option C}[/tex]
Explanation:
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is an anti-microbial drug. Anti means "against" so anti microbes mean against microbes. Antimicrobial drugs are synthesized by bacteria and fungi and are used against microbes.
An athlete has an enhanced genotype for carbohydrate utilization, however they feel sluggish after they eat carbohydrates, which of the following should the trainer consider?
a. The type of carbohydrates being consumed
b. Decrease the carbohydrate intake
c. Add more caffeine to the daily diet
d. They are likely over trained and tired
Answer:
Carbohydrates’ bad reputation ignores the benefits they can offer
sooo i would say it is B. i think....
_____ combines the isolated gene of one organism with the DNA of a different organism.
Answer:
A transgenic, or genetically modified, organism is one that has been altered through recombinant DNA technology, which involves either the combining of DNA from different genomes or the insertion of foreign DNA into a genome.
Explanation:
Answer:
Recombinant DNA
Explanation:
The diagram below shows some ocean floor features. (4 points) Which of these statements is correct about the feature labeled A in the diagram? a. It is an underwater basin caused by subduction. b. It is a deep trench located on both sides of a mid-ocean ridge. c. It is an area where sea floor spreading occurs. d. It is the portion of the ocean floor where old crusts are eroded.
Answer:
it is a deep trench located on both sides of a mid_ocean ridge
Which kind of joint allows the arms to swing in circles? hinge
ellipsoidal
ball-and-socket
sliding
Answer:
hinge
Explanation:
BALL AND SOCKET Explanation:
Frances hits a cue ball into a rack of billiard balls, sending the balls in many
different directions. After a few seconds, all the balls on the table stop
moving.
Answer:
Left and right
Explanation:
Below is a partial DNA sequence used to answer the following questions.
5' - TATGCAGCACATT - 3' 3' - ATACGTCGTGTAA - 5'
If transcription occurred from left to right, which strand is the template strand?
a. 3' - TATGCAGCACATT - 5'
b. 5' - TATGCAGCACATT - 3'
c. 5' - ATACGTCGTGTAA - 3'
d. 3' - ATACGTCGTGTAA - 5'
Answer:
d. 3' - ATACGTCGTGTAA - 5'
Explanation:
The template strand refers to the strand in which the mRNA is developed in the DNA strand as it involves the transcription for template
In the given situation, since there is a partial DNA sequence mentioned plus it the transcription has also occurred from left position to the right position i.e
5' - TATGCAGCACATT - 3'
So it would be
3' - ATACGTCGTGTAA - 5'
Hence, the correct option is d.
A portion of the linkage map of chromosome 2 in the tomato is illustrated here. The oblate phenotype has flattened fruit, peach results in hairy fruit (like a peach), and compound inflorescence means clustered flowers.
o(oblate) ci (compound inftluorescence) p (peach)
15 cM 20 cM
Among 1,000 gametes produced by a plant of genotype o ci +/+ + p, what types of gametes would be expected, and what number would be expected of each? Assume that the chromosome interference across this region is 80%.
Answer:
Expected gametes : o+ ci+ p+,o- ci- pi-, o+ci- pi+,o- ci+ pi-, o+ci+ pi-, o- ci- pi+
Explanation:
Genetic distance between genes is equal to the recombination frequency, so the total number of recombinant gametes can find out by multiplying the recombination frequency of both sides to the total number of gametes.
Interference= .80;
Coefficient of incidence
= 1 - 0.80
= 0.20
15cM = 15% recombination,
20cM = 20% recombination.
Then, Number of recombinant offspring
= 15 x1000/100
= 150,
Gametes expected= o+ ci+ p+,o- ci- pi-, o+ci- pi+,o- ci+ pi-, o+ci+ pi-, o- ci- pi+
The Frank-Starling law of the heart states that stroke volume is proportional to ________.
Answer:
end diastolic volume
Explanation:
The Frank-Starling Law states that the stroke volume of the left ventricle will increase as the left ventricular volume increases.
Drag each tile to the correct box
Place the items in order from highest to lowest degree of internal organization
tissue
organ system
HID
&
Answer:
cell
tissue
organ
organ system
I hope this helps
Order from highest to lowest degree of internal organization are organ system, organ, tissues, cell.
What are the characteristic feature of tissue?A group of cells with similar structure and performing specific function called as tissue.
In animal it can be up four types such as connective, muscle, nervous, and epithelial tissue.
Connective tissue is made up of cells and gel like substances. Except lymph and blood all tissue contains collagenous fibers.
Fibers Of connective tissue help in binding of bones, movement of lungs, physical support to cell.
Muscle tissue are up different types like skeletal, cardiac and smooth muscle.
Skeletal muscle help in binding of tendons to bones followed by movement.
Cardiac muscle in heart and help in contraction to pump blood.
Smooth muscle in the intestine helps in movement of food through the digestive tract.
Nervous tissue is present in the brain, spinal cord, and peripheral nerves, made up of neurons.
Epithelial tissue are present on the surfaces the skin, the trachea, the reproductive tract, provide protection to organs.
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