Question

Arrange the following in decreasing order based on the results obtained in the $F_2$ progeny of a dihybrid cross
(a) Total number of parental genotypes
(b) Total number of recombinant genotypes
(c) Total phenotypes
(d) Total genotypes

• A. c, b, d, a
• B. a, c, d, b
• C. d, a, c, b
• D. d, b, c, a.

Answer 1

The correct option is D d, b, c, a.

a)Total number of parental genotypes – 2

b)Total number of recombinant phenotypes – 6

c)Total phenotypes – 4

d)Total genotypes – 9

Decreasing order is d>b>c>a

So, the correct option is ‘d,b,c,a’.