Mutation and recombination are two key drivers of genetic diversity, raw material for evolution.
Mutation: Types
Incomplete Dominance in the F1 Generation: Predicting Phenotype Incomplete dominance results in a blending of traits in the F1 generation, where the heterozygous offspring exhibit a phenotype intermediate between the two homozygous parents. Instead of one allele completely masking the other (as in complete dominance), both alleles contribute to the phenotype. Predicting Phenotypes: To predict the phenotypes in the F1 generation for a specific cross involving incomplete dominance, we need information about the parental phenotypes and the mode of inheritance for the trait. Steps Examples of Incomplete Dominance: Examples of Incomplete Dominance in Action Example 1: Flower Color in Four O’Clock Plants Example 2: Feather Color in Chickens Example 3: Snapdragon Flower Color (Multiple Alleles) Snapdragon flower color involves multiple alleles, leading to a wider range of phenotypes: Punnett squares Using Punnett squares can help visualize the genotypes and phenotypes in the F1 generation. For example, the Punnett square for the four o’clock plant example would look like this: R R W RW RW W RW …