Genetics: Monohybrid Cross Concepts

What is the primary factor that determines whether a guinea pig has hair?

• Its diet

• The environment it lives in

• Its DNA and inherited genes

• How often it is groomed

Which statement best describes a recessive allele?

• It is always represented by a capital letter.

• It will always show its trait, regardless of other alleles.

• It only shows its trait if no dominant allele is present.

• It is responsible for making an organism hairy.

A guinea pig with the genotype 'HH' is described as what?

• Heterozygous recessive

• Homozygous dominant

• Heterozygous dominant

• Homozygous recessive

In a monohybrid cross between two heterozygous parents (Hh x Hh), what is the expected genotypic ratio of the offspring?

• 1:1 (Homozygous dominant : Heterozygous)

• 1:2:1 (Homozygous dominant : Heterozygous : Homozygous recessive)

• 3:1 (Hairy : Hairless)

• 2:1:1 (Heterozygous : Homozygous dominant : Homozygous recessive)