What is the genotype of the females that gave rise to these progeny?
Females heterozygous for the recessive second chromosome mutations px, sp, and cn are mated to a male homozygous for all three mutations. The offspring are as follows:
A) px+sp cn / px sp+cn+
B) px+sp cn+ / px sp+cn
C) px+sp+ cn+ / px spcn
D) pxsp cn+ / px+ sp+cn
E) insufficient data
D) pxsp cn+ / px+ sp+cn
You might also like to view...
Glucose is converted into glucose 6-phosphate by hexokinase. Glucose 6-phosphate then serves as the substrate for the enzyme phosphoglucose isomerase, which converts this reactant into fructose 6-phosphate. Fructose 6-phosphate serves as the substrate for phosphofructokinase, which converts fructose 6-phosphate into fructose 1,6-bisphosphate. Based on the information provided, this is an example of what?
A. Feedback inhibition B. Allosteric regulation C. A metabolic pathway D. Enzyme inhibition
From a genetic viewpoint, of what significance is fertilization?
What will be an ideal response?
Experimentally sending sustained stimulation to a muscle fiber causes ________
a. tetanus b. a period of insensitivity to further stimulation c. a twitch d. a forceful contraction
RNA molecules differ from DNA molecules because only RNA
A. does not have thymine. B. has ribose. C. has uracil. D. is typically one strand of nucleotides. E. All of these choices are correct.