If one parent is heterozygous white (ww) and the other is homozygous black (ww), give the phenotype and genotype ratios for this cross.

phenotype:
genotype ratio ww: ww

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There are two phenotype: black and white.

As we can observe that in heterozygous condition (Ww) the phenotype is  white. Hence, white is a dominant character whereas black is a recessive character which will be expressed only under homozygous recessive condition i.e. (ww).

Now, Ww will form two types of gametes W and w whereas ww will form only one type of gamete i.e. w.

Cross (mentioned in the attached file)

There are two white and two black offspring. Hence, the phenotypic ration (white:black) would be 2:2 which comes out to be 1:1.

Similarly, there are two Ww and two ww. Hence, genotypic ratio (Ww:ww) would be 2:2 which comes out to be 1:1.

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