Question

The numerical proportion of different phenotypes expressed in the offspring of a cross is called the:

Options

• Pureline ratio

• Genotypic ratio

• Back cross ratio

• Phenotypic ratio

Answer 1

The phenotypic ratio is the numerical proportion of different phenotypes among the offspring of a cross. It classifies the F₂ offspring based on physical appearance, whereas the genotypic ratio classifies them based on genetic makeup.