genetic, Biology

Assignment Help:
1. The genes for ruby eyes (rb), tan body (t) and cut wings (ct) are all found on the X-chromosome of Drosophila melanogaster. All of these are recessive traits. They map in the order rb, ct, t with 12.5 map units between rb and ct and 7.5 map units between ct and t. Suppose you cross a cut wing male with a homozygous female that is both tan and has ruby eyes.
a. What will the F1 females look like?
b. Draw map of the section of the X chromosomes that has these 3 genes for the F1 females
c. Assume you testcross your F1 females.
i. What progeny classes would you expect?
ii. Give approximate numbers for each class based on a total of 2000 progeny.
1. Assuming the i=1 and there are no double crossovers.
2. Assuming the i=0 and there are the expected number of double crossovers.


Related Discussions:- genetic

Upwelling zones of high biological productivity, Upwelling zones of high bi...

Upwelling zones of high biological productivity are found along the western coasts of the major continents. What causes this upwelling? a- cold currents moving from the equator tow

Sexology, what is meant by double penetration sex?

what is meant by double penetration sex?

Illustrate goal of modern dentistry, Q. Illustrate goal of modern dentistry...

Q. Illustrate goal of modern dentistry? The goal of modern dentistry is to restore the patient to normal contour, comfort, function, esthetics, speech and health regardless of

Respiration in adult amphibians and fishes, Q. Do amphibians have direct de...

Q. Do amphibians have direct development? In amphibians the embryonic development is indirect there is a larval stage. Q. How different are the respiration in adult amphibi

Physical and chemical factors that affect the pasteurization, Define the Ph...

Define the Physical and Chemical Factors That Affect the Pasteurization? There are a few other physical and chemical factors that affect the pasteurization method. These involv

What are the two groups of defense mechanisms of the body, What are the two...

What are the two groups of defense mechanisms of the body against foreign or harmful agents? What is the difference between them? The body has many defense mechanisms against f

What is root pressure, What is root pressure? Root pressure is the pre...

What is root pressure? Root pressure is the pressure that forces water from the soil to be absorbed by the xylem of the root. It is because of the osmotic gradient among the i

Glycogenolysis, Glycogenolysis:   It is breakdown  of glycogen to glucose  ...

Glycogenolysis:   It is breakdown  of glycogen to glucose  by means  of the   reaction   series  shown  in figure 6.11 Like glycogenesis  it also  occurs in all  body  cells , But

Explain about hypoglycemia, Q. Explain about Hypoglycemia? It is a Gree...

Q. Explain about Hypoglycemia? It is a Greek term: hypo -meaning less; glyc- means sweet; and emia- means "of the blood". It is a condition in which less than normal amount of

Proestrus - estrous cycle, Proestrus - Estrous cycle This precedes the...

Proestrus - Estrous cycle This precedes the next heat and is characterised by functional involution of the corpora lutea and preovulatory swelling of the follicles. Fluid coll

Write Your Message!

Captcha
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