If the color trait was controlled by one gene and two alleles, with the dominant

Question

If the color trait was controlled by one gene and two alleles, with the dominant allele being fluorescent (F) and the recessive allele being normal colored (f), what ratio of offspring would result from the following crosses? You will need to complete Punnett Squares to get your answers. (You do not need to show your Punnett Squares here).

Normal colored male (ff) x normal colored female (ff)

Normal colored female (ff) x homozygous fluorescent male (FF)

Heterozygous fluorescent female (Ff) x heterozygous fluorescent male (Ff)

Explanation / Answer

1. from normal coloured female (ff) & normal coloured male (ff), 100% progeny will be normal coloured (ff)

2. from normal coloured female (ff) & homozygous fluorescent male (FF), 100% progeny will be heterozygous fluorescent (Ff)

3. from heterozygous fluorescent female (Ff) & heterozygous flurescent male (Ff), progeny will be - 25% homozygous normal coloured (ff), 50% heterozygous fluorescent (Ff), 25% homozygous fluorescent (FF) . here ratio will be 1:2:1

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