March 27, 2015

Homework Help: Genetics

Posted by Tommy on Friday, November 18, 2011 at 2:11pm.

1) For each of the following partial diploids, give the cellular phenotypes for A and B. Explain.
a. for a negatively regulated gene:
FpR- poA-B/ pR po-AB-

Fp-R p-oA-B/ pR- poAB-

b. for a positively regulated gene:
FpR- poA-B/ pR po-AB-

Fp-R p-oA-B/ pR- poAB-

2) Would attenuation of the type seen in the tryp operon of E. coli be likely to occur in humans? Why or why not?

3) In the yeast gal gene system, in which genes should you be able to isolate mutations which can not turn on the gene?

4) In the developing Drosophila embryo system, what kind of mutation would give rise to:
a. an embryo with 3 abdominal segments missing
b. a fly with the correct number of segments, but had two additional thoracic segments and two fewer abdominal segments.

5) How is it possible for an organism with 20,000 genes to produce millions of different (protein) antibodies?

I was wondering if you could help out with any of these questions to help me study for a test. Thank You

Answer this Question

First Name:
School Subject:

Related Questions

Genetics - A recessive eye color mutation (se) in fruit flies leading to a color...
human Genetics - 3. The ABO blood type is controlled by a single locus, called I...
genetics - ______________ means that neither gene in a gene pair (genotype) ...
biochemical genetics - You have discovered a new species of yeast and you would ...
cellular bio - Why do some signaling mechanisms give rise to rapid changes in ...
biochemical genetics - After several rounds of experiments like those described ...
DNA + Genetics - During the menstrual cycle, the ovarian steroid hormones ...
Genetics - How could you use a reporter gene to see if a certain gene was an ...
biochemistry - Consider the following genes in a hypothetical bacterium: galA ...
Genetics - A flowering plant with orange petals is self-crossed to yield the ...