A Plant of Genotype C/C ;D/d Is Crossed to C/c

question 18

Multiple Choice

A plant of genotype C/C ;d/d is crossed to c/c ;D/D,and the F₁ is testcrossed.If the genes in question are unlinked,the percentage of double homozygous recessive individuals in the offspring of the testcross will be:

• A)less than 25%.
• B)about 25%.
• C)more than 25%,but less than 50%.
• D)about 50%.
• E)more than 50% but less than 75%.

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