Amoeba Sisters Monohybrid Crosses

What does a recessive allele require to show up in an organism's traits?

• Absence of a dominant allele

• Two dominant alleles

• Presence of a dominant allele

• A mix of dominant and recessive alleles

What does a recessive allele require to show up in an organism's traits?

• No dominant allele should be present.

• A dominant allele must be present.

• It must be paired with a different allele.

• It must be represented by a capital letter.

Which genotype represents a hairless guinea pig?

• Big H, Big h

• Little h, Little h

• Big H, Little h

• Big H, Big H

What does the term 'homozygous' mean in genetics?

• Having one dominant and one recessive allele

• Having two different alleles

• Having no alleles

• Having two identical alleles

Which genotype represents a hairless guinea pig?

• Big H, Big H

• Little h, Little h

• Big H, Big h

• Big H, Little h

What does the term 'homozygous' mean in genetics?

• Having two different alleles for a trait.

• Having two identical alleles for a trait.

• Having no alleles for a trait.

• Having one dominant and one recessive allele.

In a mono-hybrid cross of two heterozygous guinea pigs, what percentage of offspring are expected to be homozygous dominant?

• 50%

• 75%

• 100%

• 25%

What does a phenotype ratio of 3:1 indicate in a Punnett square?

• Three organisms are hairless and one has hair

• Three organisms are homozygous dominant and one is heterozygous

• Three organisms have hair and one is hairless

• Three organisms are heterozygous and one is homozygous recessive

In a mono-hybrid cross of two heterozygous guinea pigs, what percentage of offspring are expected to be homozygous recessive?

• 75%

• 25%

• 50%

• 100%

What does a phenotype ratio of 3:1 indicate in a Punnett square?

• Three organisms have the same genotype.

• Three organisms are heterozygous.

• Three organisms have hair, and one is hairless.

• Three organisms are homozygous dominant.