Answer:
leaf litter-->crab-->seabird
FC0 is a (+) frameshift mutation in the rII locus. A stock of FC0 is mutagenized with proflavin and plated on a lawn of E. coli K, where only phenotypically wild type phage can grow. You pick one of the plaques and make a stock of it. You would like to determine whether the stocks reversion to rII+ was a true reversion or the result of a second site suppressor mutation. To do this you cross the phage with phage from a wild type stock and plate the progeny on E. coli B. You find that 96% of the plaques are small and 4% large. Based on this data, you conclude that the stocks reversion to rII+ was the result of:__________
A. true reversion.
B. second site suppressing mutation
Answer:
B. second site suppressing mutation
Explanation:
The second site of the repression mutation as 96 percent showed the small colonies that tells the growth was not the good as the agar that allowed the growth of the only wild type of strains. So it was not a true reversion to a wild type.
And because the small colony is visible, it means that there are some growth which means that some of the strains tried to turn back in the wild type.
Based on this data, you conclude that the stock's reversion to rII+ was the result of - B. second site suppressing mutation.
The second site mutationa double mutation within a gene.normally the second-site mutation suppresses the first mutation so that the double mutant has the wild-type phenotype.True reversionA mutation that precisely restores a mutant DNA sequence to the wild-type DNA sequencehere in this case there is already a frameshift mutation present and mutagenized with proflavin and plated on a lawn of E. coli K.
we know these plate plates only allow phenotypically wild-type phages to grow.here just 96% showed small colonies which indicate second site suppressing mutationit shows that growth was not that brilliant as the agar allowed the growth of only wild-type strains, therefore, it was not a true reversion to the wild type. And since a small colony was visible means there was some growth meaning some strains tried to turn back to the wild type.Thus, Based on this data, you conclude that the stocks reversion to rII+ was the result of: B. second site suppressing mutation.
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Help please...!.....
Answer:
C is the answer
please mark me Brainliest
English Astronomen coined the word ' Asteroid ' who is also the 1st to discover ______
Planet in the Solar System
Yeast is a: rhizobium, legume, bacteria or fungi?
Answer:
legume mark me brainy plz!
Explanation:
Answer:
I think its a legume?
Explanation:
Which of the following is an external stimulus? O A hunger O B. sunlight O c. instinct OD. tropism
Answer:
Sunlight
Explanation:
Light is an external stimulus for plants. In response to light, plants exhibit phototropism
I NEED HELP!!!! What 4 minerals most commonly found in rocks?
•calcite
•feldspar
•fluorite
•halite
•hematite
•magnetite
•mica
•quartz
About 200 minerals make up the rocks.
What are Rocks?The chemical composition and atomic structure of minerals are distinctive. Numerous physical characteristics of minerals, including as hardness, lustre, streak, and cleavage, can be used to quickly identify them. For instance, the mineral quartz is quite hard and not as readily scratched as the mineral talc, which is quite soft and easily scratched.
One of the most effective ways to categorize and differentiate between various minerals is by careful examination of crystal forms.
A crystalline solid is composed of constituent atoms, molecules, or ions arranged in an orderly repeating pattern that extends across all three spatial dimensions.
Therefore, About 200 minerals make up the rocks.
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what is a selectable marker?????
Which practice is used to destroy and eliminate
all threats in the microbial world?
the main sugar that is used as a reactant in cellular respiration is called ____?
Answer:
glucose
Explanation:
explain why it is an advantage for plants to store carbohydrates as starch rather than as sugars
Answer:
More energy are packed into less space by starch molecules far more than glucose or sucrose yet they are able to release this energy easily, hence maximizing both storage and mobilization.
Explanation:
When plants have a period of dormancy to survive, they store their food as starch. They store enough of this energy so as to be able to restart with and to be able to maintain metabolism for the entire period of dormancy.
In addition, we know that starch is not water soluble, hence, lacks the ability to pull water into storage cells or cause irregularity in water balance. More energy are packed into less space by starch molecules far more than glucose or sucrose yet they are able to release this energy easily, hence maximizing both storage and mobilization.
Glucose is not directly transported by plants to storage. Rather, in a plant stem, the form of carbohydrate being transported is sucrose and this is because it is a non-reducing and does not react with oxygen during transport in the stem to specialized storage plastids.
It is advantageous for plants to store carbohydrates as starch rather than as sugars because:
sugars such as sucrose, fructose, and glucose are soluble and cannot be stored in the body of plant.as such, plants have to find a way to store their food reservesone way to store the food would be to store them in less soluble form that cannot be washed away easily and can also be converted to usable forms when needed.Hence, starch provides for that option. Cellulose could also have been a choice, but its structure makes it such that it becomes a permanent part of the plant and cannot be converted to usable food anymore.Hence, it is advantageous to store carbohydrates as starch by plant rather than sugars because starch cannot be washed away easily and can also be converted to usable foods when needed.
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When you place a warm beverage in to a cooler what happens 
Answer:
if there is nothing else in there then the beverage will retian its warmth
Explanation:
Answer:
the warm beverage begins to pass on its heat to everything in the cooler causing the beverage to cook down.
Much research has been done in the cloning of animals; a tadpole in 1954, Dolly the sheep in 1997, and the endangered
gaur are just a few of the "famous” cloned animals. However, cloning of animals has met with limited success. Which
statement is a scientific argument against the cloning of animals?
Calculate the Vapour pressure of a Solvent
above a Solution Containing 83.99g of
molecular mass 195.62 per 1000g Water 20C
the vapour pressure of
Water at 20°c is 17.73mmHg
Will someone help me fast?!
Scientists sometimes crosses paths with other fields of study, such as religion and philosophy. What is your opinion on how far science should go into these fields? Write one sentence stating your opinion and one sentence backing Your opinion
Answer:
I think scientist should not go into religion at all. When scientist go into religion they can blur facts with oppinion and that takes out the science part.
Explanation:
akfjkal
According to Kinsey's sexual behavior study, approximately
percent of
men and
percent of women had sexual intercourse by the age of 16.
Someone help me
According to Kinsey's sexual behavior study, approximately 21 percent of men and 6 percent of women had sexual intercourse by the age of 16. (Please mark me brainliest! thank you in advance!!)
Which plants produce seeds?
Angiosperms and Conifers
Bryophytes and Ferns
Conifers and Bryophytes
Ferns and Angiosperms
Answer:
C. Angiosperms and Conifers
Angiosperms:
A plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
Conifers:
A tree that bears cones and needle-like or scale-like leaves that are typically evergreen. Conifers are of major importance as the source of softwood, and also supply resins and turpentine.
Hope this helps you out! Took some time to do this, maybe a brainliest? Sorry for asking! Have a good day!!
in peas yellow seed color y is dominant to green seed color y
Answer:
so? what is the question in here? BTW dominant one is capital.
If you are studying how genes interact then you are involved in functional genomics.
True
False
1. Animals that eat only plants are called ________.
1. carnivores
2. decomposers
3. herbivores
4. omnivores
Answer:
3
Explanation:
they are called herbivores
Answer:
Herbivores
Explanation:
Chromosomes pull apart and move toward opposite ends of the cell during which stage of meiosis II?
O prophase II
O metaphase II
O anaphase II
telophase II
Write your ideas about your thoughts on the different concepts in mountaineering.
a. camping-
b. trekking-
Answer:i have no clue
Explanation:
indontninow
A red blood cell has a salt concentration of 0.9%. What will happen if it is placed into
a 0.8% salt solution? The red blood cell will
burst
remain the same
shrink then grow
shrink
Answer:
Shrink
Explanation:
The blood cell would shrink because of osmosis. The molecules move with the concentration gradient so water molecules will move outside of the cell where there is less water than inside of the cell.
Blood cells are the main constituents of the circulatory system and carry the most vital function of oxygen transportation. Blood cells have a specific concentration and osmotic pressure to remain vital.
The correct answer is:
Option D. Shrink.
This can be explained as:
Cells have a tendency to shrink in hypertonic solutions while swells in hypotonic solutions.0.8% of the salt solution will act as a hypertonic solution and the RBC placed in it will shrink.When cells are placed in hypertonic solution it loses their water content to the outside surface and hence shrink.Therefore when the red blood cells are placed in 0.8% salt solution they will shrink.
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Please help with questions 4 to 11 for 75 points!!!
Thank you :D
Answer:
1 .Atom goes to C
2.Proton goes to A
3. Neutron goes to b
Question 4:Protons are a type of subatomic particle with a positive charge. ... Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron
Question 5:Atoms are the basic building blocks of ordinary matter. Atoms can join together to form molecules, which in turn form most of the objects around you. ... The protons and neutrons cluster together in the central part of the atom, called the nucleus, and the electrons 'orbit' the nucleus.
Question6:Thomson's model of the atom in 1897 shows that the atom was a sphere of matter, wherein the electrons are mixed inside it. This model does not show the protons and the neurons. On the contrary, the current model that was proposed by Niels Bohr gives us a clearer representation of the structure of an atom.
Question 7:its mass number A is 23.
Question 8: 1 i found the number because hydrogen only has 1 atom so yuh..
I will answer the rest in the comennts:)
Explanation:
In the tomato, three genes are linked on the same chromosome. Tall is dominant to dwarf, skin that is smooth is dominant to skin that is peachy, and fruit with a normal tomato shape is dominant to oblate shape. A plant that is true-breeding for the dominant traits was crossed to a dwarf plant with peachy skin and oblate fruit. The F1 plants were then testcrossed to dwarf plants with peachy skin and oblate fruit. The following results were obtained:151 tall, smooth, normal33 tall, smooth, oblate11 tall, peach, oblate2 tall, peach, normal155 dwarf, peach, oblate29 dwarf, peach, normal12 dwarf, smooth, normal0 dwarf, smooth, oblateConstruct a genetic map that describes the order of these three genes and the distances between them.
Answer:
Genetic Map + distances between genes
---T--------------S---------------N---
║---6.4%---║----16.3%---║
║-----------22.7%-----------║
Explanation:
Available data:
three diallelic genes are linked on the same chromosome: T gene codifies for height, S gene codifies for skin texture, and N gene codifies for fruit shape.Tall (T-) is dominant to dwarf (tt)Skin that is smooth (S-) is dominant to skin that is peachy (ss)Fruit with a normal tomato shape (N-) is dominant to oblate shape (nn)A plant that is true-breeding for the dominant traits was crossed to a dwarf plant with peachy skin and oblate fruitF1 plants were then testcrossed F2: 151 tall, smooth, normal T-S-N-33 tall, smooth, oblate T-S-nn11 tall, peach, oblate T-ssN-2 tall, peach, normal T-ssnn155 dwarf, peach, oblate ttssnn29 dwarf, peach, normal ttssN-12 dwarf, smooth, normal ttS-N-0 dwarf, smooth, oblate ttS-nnWe can recognize the parental gametes in the descendants because their phenotypes are the most frequent,
151 tall, smooth, normal TSN155 dwarf, peach, oblate tsnwhile the double recombinants are the less frequent.
2 tall, peach, normal TsN0 dwarf, smooth, oblate tSnAnd simple recombinant gametes produced by the cross, which frequencies are intermediate.
33 tall, smooth, oblate TSn11 tall, peach, oblate Tsn29 dwarf, peach, normal tsN12 dwarf, smooth, normal tSNComparing the parental and the double recombinant we will realize that they only change in the position of the alleles S. This suggests that the position of the gene skin texture is in the middle of the other two genes, because in a double recombinant only the central gene changes position in the chromatid.
---T-----S-------N---
Now we will call Region I to the area between T and S and Region II to the area between S and N.
---T------S-------N---
RI RII
Once established the order of the genes we can calculate distances between them, and we will do it from the central gene to the genes on each side. First We will calculate the recombination frequencies, and we will do it by region. We will call P1 to the recombination frequency between T and S genes, and P2 to the recombination frequency between S and N.
P1 = (R + DR) / N
P2 = (R + DR)/ N
Where: R is the number of recombinants in each region, DR is the number of double recombinants in each region, and N is the total number of individuals. To calculate the recombination frequency, we have to know that 1% of recombinations = 1 map unit = 1cm. And that the maximum recombination frequency is always 50%.
N = 151 + 33 + 11 + 2 + 155 + 29 + 12 + 0 = 393
So:
P1 = (R + DR) / N = 2 + 0 + 11 + 12 / 393 = 0.064 P2 = (R + DR)/ N = 2 + 0 + 33 + 29 / 393 = 0.163Now, to calculate the recombination frequency between the two extreme genes, A and B, we can just perform addition or a sum:
P1 + P2= Pt
0.064 + 0.163 = Pt
0.227 = Pt
The genetic distance will result from multiplying that frequency by 100 and expressing it in map units (MU). One centiMorgan (cM) equals one map unit (MU). The map unit is the distance between the pair of genes for which one of every 100 meiotic products results in a recombinant product.
P1 = 0.064 x 100 = 6.4% P2 = 0.163 x 100 = 16.3% Pt = 0.227 x 100 = 22.7%Genetic Map
---T--------------S---------------N---
║---6.4%---║----16.3%---║
║-----------22.7%-----------║
what are the atomic number and atomic weight of iron.
Atomic Number 26
Explanation:
hope it helps
Answer:
26 and 55.845
Explanation:
Read the following passage and construct a flow chart:
Exercise begins with skeletal muscle contraction, an active process that requires adenosine triphosphate (ATP) for energy. A small amount of ATP is present in the muscle when contraction begins. This ATP can be used and replenished to fuel about 15 seconds of intense exercise, after which point the muscle must generate more ATP through the process of cellular respiration. During cellular respiration, oxygen is used up when it combines with hydrogen to form water (oxidative phosphorylation). Thus, as a muscle's metabolism increases during exercise, the concentration of oxygen in the tissue decreases, while temperature, acid, and CO2 increase. These factors and the homeostatic sensors that detect them send out signals that result in local vasodilation, which shunts bloodflow from inactive tissues to the exercising muscles, where it is needed.
Drag and drop each of the following terms to form a flow chart.
Person starts to exercise
Oxygen sensors cause local blood cell vessels to dilate
Skeletal muscle metabolism increase
Skeletal muscle oxygen demand increase
Blood delivery to the skeletal muscle increases is order to provide more oxygen
Solution :
A flowchart may be defined as the diagram which represents the process or the workflow of any process. It is the step by step approach to solve or to do the process.
In the context, the the sequence of each of the terms to form a flowchart is :
1. Person starts exercising.
2. The metabolism of the skeletal muscle increases.
3. The demand for oxygen for the skeletal muscle increases.
4. The oxygen sensors causes the local blood cell vessels to dilate.
5. For providing more of oxygen, the blood flow to the skeletal muscle increases.
Which of the following best explains the difference between autotrophs and
heterotrophs?
A Heterotrophs are organisms that can produce their own food and autotrophs are organisms that
must consume or break down other organisms for food.
B Autotrophs are consumers and heterotrophs are producers.
C Autotrophs are organisms that can produce their own food and heterotrophs are organisms that
must consume or break down other organisms for food.
D Heterotrophs live in terrestrial ecosystems only and autotrophs can live in terrestrial or aquatic
ecosystems.
Answer:
C. Autotrophs (plants) are organisms that can produce their own food and heterotrophs (animals) are organisms that must consume or break down other organisms for food.
What is the purpose of the part of the female reproductive system highlighted
below?
A. Transporting eggs
B. Developing a fetus
C. Storing eggs
D. Collecting sperm
Answer:Your answer for this question is D.
Explanation:
The purpose of the part of the female reproductive system highlighted is to collect sperm; that is the last option (D), and after that, the sperm go to the female fallopian tube.
What is the female reproductive system?The female reproductive system is a complex network of organs and structures that work together to produce, transport, and fertilize an egg, as well as support the growth and development of a fetus during pregnancy. The primary organs of the female reproductive system are the ovaries, which produce and release eggs, and the uterus, which is the muscular organ where a fertilized egg implants and develops into a fetus.
Hence, the purpose of the part of the female reproductive system highlighted is to collect sperm; that is the last option (D), and after that, the sperm go to the female fallopian tube.
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A situation in which the coefficient of coincidence is greater than 1.0 would indicate that: A. no double crossovers were found in the progeny of a testcross, even though some were expected based on probability. B. there were more double crossovers in the progeny than would be expected based on probability. C. the genes involved were actually assorting independently. D. the interference is high and one crossover suppresses the occurrence of a second one. E. double crossovers were found in the progeny of a testcross, but there were fewer of them than would be expected based on probability.
Answer:
B. there were more double crossovers in the progeny than would be expected based on probability
Explanation:
Crossing over or recombination can be defined as the exchange of genetic material between homologous chromosomes during meiosis. Moreover, the coefficient of coincidence is the number of double recombinants found in the progeny. The coefficient of coincidence can be estimated by the following equation:
Coefficient of coincidence (COC) = ADRF / EDRF
where ADRF = Actual Double Recombinant Frequency
and EDRF = Expected Double Recombinant Frequency
In the case above described, ADFR is higher than EDRF, and therefore COC will be higher than 1.
Veronica has a Hitchhiker’s thumb, but neither of her parents do. She also has a different skin tone than her parents, she likes different foods than they do, and she will probably end up taller than both of them. Scientists think that differences between closely related people are
1. Entirely a result of genetic factors.
2. Entirely a result of environmental factors.
3. Due to both genetic and environmental factors.
Answer:
3. Due to both genetic and environmental factors.