3. Genetics

Mendelian Genetics — Quiz

Test your understanding of mendelian genetics with 5 practice questions.

Practice Questions

Question 1

In a cross between a plant with genotype $AABb$ and a plant with genotype $Aabb$, what is the probability of producing offspring with the genotype $AABb$?

Question 2

A genetic disorder is inherited as an autosomal recessive trait. If two unaffected parents have an affected child, what is the probability that their next child will be an unaffected carrier?

Question 3

In a dihybrid cross involving two unlinked genes, $A$ and $B$, what is the expected proportion of offspring that are homozygous recessive for both traits ($aabb$) when two parents heterozygous for both traits ($AaBb \times AaBb$) are crossed?

Question 4

If a black guinea pig (BB) is crossed with a white guinea pig (bb), and black (B) is dominant over white (b), what percentage of the F2 generation (from a cross of F1 individuals) will be white?

Question 5

A pedigree chart shows that a trait skips a generation and affects males more frequently than females. What is the most likely mode of inheritance for this trait?