Question

095. The following is a hypothetical pathway for the development of wild type (red) eye color in an insect:
w (colorless precursor) Y (colorless precursor)
Enzyme A
Enzyme B
X (Orange pigment)
Z (Brown pigment)
Red eye color
(wild type)
Enzymes A and B are encoded by the genes at and b*, respectively,
The following statements are made regarding inheritance of the genes involved in the development of eye color:
P. when two heterozygous individuals of the genotype at abt bare mated, progenies with red, orange, brown
and white eye color will be observed irrespective of whether the genes are independently assorting or showing
incomplete linkage.
Q. When two heterozygous individuals of the genotype aabt bare mated, progenies with red, orange, brown
and white eye color will be observed in a ratio of 9:3:3:1, when the genes are independently assorting.
R. when a heterozygous individuals of the genotype at b/a b' is test crossed, progenies with red and white eye
color will be more in number.
S. when a heterozygous individual of the genotype at b/a bt is test crossed, progenies with orange and brown
eye color will be more in number
Which of the above statements is true?
a. P and R
b. Q and R
c. P, Q and R
d. P, Q and s​

Answer 1

Answer:

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