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

Determine about the prokaryotic cell, Determine about the prokaryotic cell ...

Determine about the prokaryotic cell While we describe in detail the structure of a eukaryotic cell, it will be useful to examine the structural features of a typical prokaryot

Mechanisms for response – protozoan, Mechanisms for Response – Protozoan ...

Mechanisms for Response – Protozoan Protozoa are sensitive to many kinds of stimuli like touch, temperature changes, light, chemicals, etc. It is not clear how they do so but

Explain jugular venous pressure and pulsation in details, Explain Jugular...

Explain Jugular venous pressure and pulsation in details? The jugular venous system is in direct continuity to right atrium in systolic extending to right ventricle in diast

How does the poison cyanide act upon the aerobic respiration, Q. How does t...

Q. How does the poison cyanide act upon the aerobic respiration? Cyanide is a poison that restrains the last cytochrome of the respiratory chain, interrupting the ATP formation

Cell surface junctions, CELL SURFACE JUNCTIONS (1 )      Desmosomes (...

CELL SURFACE JUNCTIONS (1 )      Desmosomes (Maculae adherence) - Thickened circular areas on P.M. of adjacent cells with radiating fibrils in cytoplasm. These fibrils calle

Use of neurotensin in consciousness, Q. Use of Neurotensin in consciousness...

Q. Use of Neurotensin in consciousness? Although little is known about the role of this peptide during the sleep-wake cycle, it has recently been shown that neurotensin injecti

Fine structure of pollen tubes grown in vitro, Fine Structure of Pollen Tub...

Fine Structure of Pollen Tubes Grown in Vitro The growth in pollen tubes is exclusively restricted to the tip. Cytochemical analysis reveals the pollen tip zone to be rich in

Define about the resistant starch, Define about the Resistant Starch? U...

Define about the Resistant Starch? Until 1980's starch was thought to be completely hydrolyzed and absorbed from the small intestine of man, independent of its source, type and

Determine the term - essential element, Determine the term - essential elem...

Determine the term - essential element It becomes difficult to meet all the conditions so as to establish essentiality. This is particularly so for the elements that are requir

Aortic valve replacement-types of surgery in ar, Aortic Valve Repla...

Aortic Valve Replacement :  Technique: Surgical technique is not much different from what has already been described for aortic stenosis. Care must be taken to avoid VF

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