You are trying to determine the linkage relationship for two genes in tomatoes.

Question

You are trying to determine the linkage relationship for two genes in tomatoes. You make a test cross between a plant heterozygous for the traits of purple stems (p) and hairy (h) leaves, and obtain the following offspring phenotypes: 184 purple hairy; 314 purple smooth; 316 green hairy; 186 green smooth. What can you conclude (to be confirmed with statistical analysis)?

Options:

A) Genes are not linked

B) Genes are linked and the genotype was P/p ; H/h

C) Genes are linked and the F1 genotype was PH/ ph

D) The Genes are linked and the F1 genotype Ph/pH

E) None of the above

Explanation / Answer

Answer:- Since the result of test cross is the offspring phenotypes: 184 purple hairy; 314 purple smooth; 316 green hairy; 186 green smooth this is means that genes are not linked. So option is A.

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