A human trait is influenced by a single pair of genes, with "T" representing the dominant gene and "t" representing the recessive gene. Joe (genotype Tt) and Meg (genotype Tt) decide to have children. According to the principles of Mendelian heredity, what percentage of their children would exhibit the trait?

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According to Mendelian genetics, the possible genotypes for their children are TT, Tt, Tt, and tt. Three out of these four combinations (TT, Tt, Tt) will exhibit the dominant trait, resulting in 75% of the children showing the trait.

A Human Trait Is Influenced by a Single Pair of Genes