Genetics and Traits of Guinea Pigs Quiz

What does a recessive allele require to be expressed?

• Presence of a dominant allele

• Absence of a dominant allele

• Presence of another recessive allele

• Both alleles being dominant

What is the genotype of a hairless guinea pig?

• HHh

• hh

• Hh

• HH

Which of the following genotypes represents a heterozygous condition?

• HH

• Hh

• hh

What does 'homozygous' mean?

• No alleles

• Same alleles

• Different alleles

• One dominant and one recessive allele

If a guinea pig has hair, which of the following could NOT be its genotype?

• HH

• Hh

• hh

What percentage of offspring will have hair if two heterozygous guinea pigs are crossed?

• 100%

• 75%

• 50%

• 25%

What is the phenotype of a guinea pig with the genotype 'hh'?

• Partially hairy

• Cannot be determined

• Hairy

• Hairless

What does the root 'hetero' in 'heterozygous' mean?

• Same

• Dominant

• Different

• Recessive

In a Punnett square, what does a capital letter represent?

• Both alleles

• No allele

• Dominant allele

• Recessive allele

What is the purpose of a test cross?

• To determine the exact genotype

• To determine the phenotype

• To confirm the physical appearance

• To predict the probability of traits