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

How to investigate mitral stenosis by electrocardiogram, Q. How to Investig...

Q. How to Investigate mitral stenosis by Electrocardiogram? Electrocardiographic changes are not specific for mitral stenosis and are never diagnostic for any valvular heart di

Which are vessels that drain filtered blood from the kidneys, Q. Which are ...

Q. Which are the vessels that drain filtered blood from the kidneys? The renal veins carry the blood that has been reabsorbed in the nephron tubules and the venous vessels that

Control of excretion, CONTRO L OF EXCRETION - 1.      In brain hypoth...

CONTRO L OF EXCRETION - 1.      In brain hypothalamus is osmocentre that controls minerals. 2.      Cells of DCT & arterioles combien to form Juxta glomerular node, it se

List the stages of process of behaviour change, Q. List the stages of proce...

Q. List the stages of process of behaviour change? Stages of behaviour change process: · Unawareness · Awareness · Acquiring knowledge · Motivation · Trial

Management of asymptomatic patient, Q. Management of Asymptomatic Patient? ...

Q. Management of Asymptomatic Patient? The most common cause of death in a truly asymptomatic patient with severe aortic stenosis is aortic valve replacement (AVR). While expec

Define cellulose, Cellulose Cellulose is found in plants as microfibr...

Cellulose Cellulose is found in plants as microfibrils (2-20 nm diameter and 100-40,000 nm long). These form the structurally strong framework in the cell walls. Cellulose is

How to explain the high level of radiation resistance, Deinococcus radiodur...

Deinococcus radiodurans is a bacterium that was isolated from cooling ponds in and around nuclear power plants. It is highly resistant to ionizing radiation. Propose a hypothesis t

Define determinants of food security - public nutrition, Define Determinant...

Define Determinants of Food Security - Public Nutrition? We learnt above that there is also a qualitative aspect to food security, which compels the perception of food not only

What is the tertiary structure of a protein, The tertiary protein structure...

The tertiary protein structure is a spatial conformation additional to the secondary structure in which the alpha helix or the beta-sheet folds up itself. The forces that stay the

Gastrointestinal tract function , Gastrointestinal Tract Function: As...

Gastrointestinal Tract Function: As a result of burn  injury acute gastric dilation occurs, creating abdominal distention and  regurgitations. Malabsorption occurs secondary

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