Monohybrid cross Totally Explained

Everything about Monohybrid Cross totally explained

A Monohybrid cross is a cross between parents who are heterozygous at one locus; for example, Bb x Bb (see the Punnett square below). Example: B=brown. b=blue. BB=Dark Brown. Bb=Brown not blue. bb=Blue. Monohybrid inheritance is the inheritance of a single characteristic. The different forms of the characteristic are usually controlled by different alleles of the same gene. For example, a monohybrid cross between two pure-breeding plants (homozygous for their respective traits), one with yellow seeds (the dominant trait) and one with green seeds (the recessive trait), would be expected to produce an F1 (first) generation with only yellow seeds because the allele for yellow seeds is dominant to that of green. A monohybrid cross compares only one trait.

Usage of Monohybrid Cross

Generally, the monohybrid cross is used to determine the F2 generation from a pair of homozygous grandparents (one grandparent dominant, the other recessive) which results in an F1 generation that are all heterozygous. The pairing of these offspring results in a monohybrid cross and results in the F2 generation, with a 75% chance for the dominant phenotype and a 25% chance for the recessive phenotype.

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