Mendelian ratios are modified in crosses involving autotetraploids. Assume that one plant expresses the dominant trait green seeds and is homozygous (). This plant is crossed to one with white seeds that is also homozygous (). If only one dominant allele is sufficient to produce green seeds. Predict the F1 results of such a cross.

C) all green.

Explanation:

In this crossing it can be said that the four (equal) genes are involved, which code for the same trait. According to the exercise, the green allele is the dominant allele and the white allele is the recessive one. The case can be presented where the allele masks the expression of the heterozygous allele. As a conclusion it can be said that a cross between and will give the gametes WW and ww, giving an entirely green offspring ().

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