When two heterozygous individuals of the first generation are crossed, in the offspring in the offspring there

| August 29, 2021 | education

When two heterozygous individuals of the first generation are crossed, in the offspring in the offspring there will be a certain proportion of individuals exhibiting a recessive trait. This position is illustrated by the following genetic law: 1) the law of splitting 2) the law of domination 3) the law of linked inheritance 4) the law of independent distribution of genes

Answer: 1) the law of splitting.

Heterozygous individuals have the Bb genotype and produce two types of germ cells – B and b. Offspring includes the following options:

homozygous individuals with a dominant trait (BB) – 25%; heterozygous individuals with a dominant trait (Bb) – 50%; homozygous individuals with a recessive trait (bb) – 25%. In other words, the progeny splits into several phenotypic and genotypic variants.



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