What propotion of testcross progeny will have no trichomes

Assignment Help Biology
Reference no: EM13116866

In the plant Arabidoposis thaliana, a geneticist is interested in the development of trichomes (small projections) on the leaves. A large screen turns up two mutant plants (A and B) that have no trichomes, and these mutants seem to be potentially useful in studying trichome development. (If they are determined by single-gene mutations, then finding the normal and abnormal function of these genes will be instructive.) Each plant was crossed with wild type; in both cases, the next generation (F1) had normal trichomes. When the F1 plants were selfed, the resuling F2's were as follows:

F2 from mutant A: 602 normal; 198 no trichomes
F2 from mutant B: 267 normal; 93 no trichomes

a.) what do these results show? Include proposed genotyes of all plants in your answer.

b.) Assume that the genes are located on separate chromosomes. An F1 is produces by crossing the original mutant A with the original mutant B. This F1 is testcrossed: What propotion of testcross progeny will have no trichomes?

Reference no: EM13116866

Questions Cloud

Illustrate what was the speed of the bullet at impact : The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 88.0 cm, illustrate what was the speed of the bullet at impact with the block?
First write a pre-plan and list 3 anticipated problems : First write a pre-plan and list 3 anticipated problems that may occur.  e.g - This could include students wanting to conjugate the chosen verb in the 1st person singular, for example, I plays football, I goed swimming, I likes cooking. Also, list 3 s..
Find out the final speed of puck b : The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing. Find out the final speed of puck A also Find out the final speed of puck B. m/s
Find least-squares regression line for predicting yield : Find the least-squares regression line for predicting yield from planting rate and add this line to your plot. Choose the correct equation for the least-sqruares regression line.
What propotion of testcross progeny will have no trichomes : Assume that the genes are located on separate chromosomes. An F1 is produces by crossing the original mutant A with the original mutant B. This F1 is testcrossed: What propotion of testcross progeny will have no trichomes?
Define most companies set annual quotas : Define Most companies set annual quotas. Quotas can be on dollar sales, unit volume, margin, selling effort or activity and product type.
Probability that adult doesn-t regularly consume coffee : What is the probability that a randomly selected adult regularly consumes both coffee and soda? What is the probability that a randomly selected adult doesn't regularly consume at least one of these two products?
Spot-money and bond markets : Explain how the Wal-Mart outlets in China would use the spot market in foreign exchange. Explain how Wal-Mart might utilize the international money markets when it is establishing other Wal-Mart stores in Asia. Expalin how Wal-Mart could use the inte..
Why dont cells last the entire lifetime of an organism : Why don't cells last the entire lifetime of an organism.

Reviews

Write a Review

Biology Questions & Answers

  Insolating different species of bacteria

After insolating different species of bacteria, you see two distinct types of colonies. One has a medium-sized shimy colonies that are mucoid with entire margins, convex elevation and a whitish traslucent appearance.

  Explain which is a key component of the cytoskeleton

explain which is a key component of the cytoskeleton.

  How nutrigenomics overcome free radical damage

How we can use nutrigenomics to overcome free radical damage in DNA in order to prevent a biological system against to cancer?

  Difference between inorganic and organic molecules

Discuss  the difference between inorganic and organic molecules? Do some research since cannot be answered in one sentence.

  Compare the recipes of nutrient agar and emb agar

compare the recipes of nutrient agar and EMB agar. If an organism can grow on both media, on which would you expect it to grow better? why?

  Discuss the major diagnostic use in clinical biochemistry

The analysis of enzymes in blood plasma has played a significant role in the diagnosis of many diseases. Two of these serum enzymes are Lactate Dehydrogenase and Creatine Kinase.

  Find the same molar amount of glucose

Assume you are creating a solution and the recipe calls for 25 ml of 10 percent glucose. How much of the 3M glucose stock would your need to add to so that you are adding the same molar amount of glucose?

  Importance of bacterial lawn

Why is important to get a bacterial lawn rather than isolated colonies on the plate? Does the zone of inhibition's edge indicate the limit of antibacterial agent diffusion into the agar?

  What is the order of the genes in the genome

You have discovered a new species of bacteria. You are able to transfer F factor to the chromosome of this bacteria in two strains (2 different insertions). Both of these strains are a+, b+, c-, d+, e-. An F- strain is a-, b-, c+, d-, e+. You look..

  Explain the structure of water

A molecular level description means that you must explain the structure of water and how that structure leads to the observation made- in this case that water beads on waxes.

  Why might low blood sugar levels occur

Discuss the events that take place with glucose levels and insulin secretion both after and meal and during exercise. Why might low blood sugar levels occur?

  What is the purpose of the pre-extracted control dna

A gel electrophoresis of PCR products was ran to test for the presence of genetic modification. The samples were a positive control, a negative control, 5 different fruits, and a control DNA. What is the purpose of the pre-extracted control DNA?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd