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

What is predatism, What is predatism? Predatism is the ecological inte...

What is predatism? Predatism is the ecological interaction in which one individual mutilates or kills another to get food. Predatism is an inharmonious (negative) ecological i

Non-extractive use values, Some activities that make use of biological reso...

Some activities that make use of biological resources, without involving their extraction or destruction, denote non- extractive use of biological resources. This includes ecotouri

What are the characteristics of thin gingiva, Characteristics of Thin Gingi...

Characteristics of Thin Gingiva  Highly scalloped soft tissue and bony architecture  Delicate friable soft tissue  Minimal amount of attached gingiva  Thin underlying

Silent myocardial ischaemia, Q. Silent Myocardial Ischaemia? Ans. ...

Q. Silent Myocardial Ischaemia? Ans. This deals primarily with those who have never had symptoms recognized as being of cardiac origin. Others, who have had recognized myo

Nerve cells, how to design a nerve cell for homework

how to design a nerve cell for homework

What happens to the tsh blood level in hypothyroidism, What happens to the ...

What happens to the TSH (thyroid-stimulating hormone) blood level in hypothyroidism? Why is there enlargement of the thyroid in the endemic goiter disease? When there is low T3

Define transcellular fluid compartment - extracellular fluid, Define transc...

Define transcellular fluid compartment - extracellular fluid? The transcellular fluid is a small compartment that represents all those body fluids which are formed from the tra

Explain cell membrane and plasma membrane, Explain cell membrane? The...

Explain cell membrane? The Cell Membrane :  The cell membrane, or plasma membrane, separates the cell from neighboring cells or from the external environment. Both prokaryot

Drawbacks of fats and sweets in diabetics, Drawbacks of Fats and Sweets in ...

Drawbacks of Fats and Sweets in diabetics Diabetics should eat less fats and sweets. Fats found in burger, cheese and butter etc. should especially be avoided. Even when  a pat

Digestive system of an arthropod, how does the digestive system of an arthr...

how does the digestive system of an arthropod operate

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