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Genetics and heredity — Question 15

QCAA 2020, Paper 1 · 1 mark

Q15 · 2020 · Paper 1Unclassified1 mark

QUESTION 15

Biology question figure

In watermelon, skin colour is controlled by a single autosomal gene. The two phenotypic variants are green and striped. Two plants, one homozygous for the green alleles, and one homozygous for the striped alleles,

The figure shows the phenotypic frequency for the initial (F0) generation and the subsequent (F1) generation.

A cross was then performed between members of the F1 generation. What would be the expected frequency of striped watermelon in the next (F2) generation?

(A) 1.0

(B) 0.75

(C) 0.50

(D) 0.25

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