A, B, D are three independently assorting genes with their recessive alleles a, b, d, respectively. A cross was made between individuals of Aa bb DD genotype with aa bb dd. Find out the type of genotypes of the offspring produced.

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Solution

Independent assortment of genes

Independent assortment of genes says that the genes of different characteristics or traits are present in different homologous chromosomes, so they segregate independently during the formation of gametes.

Gametes produced

A, B, D are three independently assorting genes with their recessive alleles a, b, d, respectively.

A cross was made between individuals of genotype Aa bb DD (let male) with that of genotype aa bb dd (let female).

Gamates produced by the individual with genotype Aa bb DD: AbD and abD

Gametes produced by recessive individual with genotype aa bb dd: abd

Type of genotypes of the offsprings produced

Types of genotypes of the offspring produced are AabbDd (heterozygous) and homozygous (aabbdd).

AbD abD

abd AabbDd aabbDd

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