A scientist was carrying out some of Mendel's experiments and wanted to understand how seed colour in peas was inherited. The scientist crossed a yellow heterozygous plant with a green homozygous plant.Determine the genotypes of the parent plants.
Question
A scientist was carrying out some of Mendel's experiments and wanted to understand how seed colour in peas was inherited. The scientist crossed a yellow heterozygous plant with a green homozygous plant.Determine the genotypes of the parent plants.
Solution
In Mendel's experiments, yellow seed color is dominant and green is recessive.
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The yellow heterozygous plant: This means the plant has one dominant allele (Y) and one recessive allele (y). So, its genotype is Yy.
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The green homozygous plant: Since green is recessive, a plant must have two recessive alleles to exhibit this trait. So, its genotype is yy.
So, the genotypes of the parent plants are Yy (for the yellow heterozygous plant) and yy (for the green homozygous plant).
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