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NEET Sample Paper NEET Sample Test Paper-69

  • question_answer
    Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybridized, the F2 segregation will show

    A) Higher number of the parental types

    B) Higher number of the recombinant types

    C) Segregation in the expected \[9:3:3:1\] ratio

    D) Segregation in \[3:1\] ratio

    Correct Answer: A

    Solution :

    When the linked genes are situated quite close, the chances of crossing over are highly reduced.    Due to this, large number of parental gametes formed and only few recombinant gametes formed.                                  This results in higher number of parental types in \[{{F}_{2}}\] generation as compared to recombinants.


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