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9. Maize carries two genes for disease resistance, msvi, msv2, on the same chromosome. They are 20 map units apart as shown:

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Answer #1

Answer:

B). 0.16

Explanation:

Distance between genes = Recombination frequency (%)

msv1 msv2 / Msv1 Msv2 genotype produces 4typea gametes as below:

Recombinant Gametes (20%):

msv1 Msv2= 10%

Msv1 msv2 = 10%

Non-recombinant gametes (80%):

Msv1 Msv2 = 40%

msv1 msv2 = 40%

Proportion of the offspring will be homozygous recessive for both genes = msv1 msv2 / msv1 msv2 = 40% * 40% = 0.16

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