NEET Solved Paper 2016 Question 80

Question: In a testcross involving 𝐹1 dihybrid flies, more parental - type offspring were produced than the recombinant-type offspring. This indicates:

Options:

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

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Answer:

Correct Answer: C

Solution:

In a testcross involving F1 dihybrid flies, if more parental-type offspring are produced than recombinant-type offspring, this indicates that the two genes are linked and present on the same chromosome. This is because linked genes tend to be inherited together, resulting in a higher frequency of parental-type offspring compared to recombinant-type offspring.