Principles of Inheritance and Variation Question 15
15. In a test cross involving $F_1$ dihybrid flies, more parental type offspring were produced than the recombinant type offspring. This indicates
[2016]
(a) the two genes are located on two different chromosomes.
(b) chromosomes failed to separate during meiosis.
(c) the two genes are linked and present on the same chromosome.
(d) both of the characters are controlled by more than one gene.
Show Answer
Answer : c
Hints & Solution
(c) When two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations are much higher than the non-parental or recombinant type. This is also called incomplete linkage.
