Question

how the cross-test offspring could help determine Fred's genotype?

Answer 1

Answer:

In a typical test cross, an organism showing a dominant phenotype (whose genotype is to be determined) is crossed with the recessive parent. The progeny of the cross are analysed to predict the genotype of the test organism. Given below is a test-cross where the violet colour flower of pea (W) is dominant over the white colour flower (w).

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