Q709
Which of the following is Top cross
A.
(A × O.P variety) × B
B.
Inbred × O.P var
AnswerC.
(A x B) × O.P variety
D.
(A × B) × (C × D)
Answer: Option B
Solution
Answer: Option B
Solution:
From the given options, Inbred × O.P var is the Top cross.It refers to the use of highly inbred males to the females of the base population or non-inbred population.
The top cross is a cross between a superior or purebred male and inferior female stock to improve the average quality of the progeny.