3. Genetics

Mendelian Genetics — Quiz

Test your understanding of mendelian genetics with 5 practice questions.

Practice Questions

Question 1

In a dihybrid cross, if two genes are unlinked, what is the expected phenotypic ratio in the F2 generation when starting with a cross between two true-breeding parents (P generation) and then intercrossing the F1 generation?

Question 2

A red flower (RR) is crossed with a white flower (WW). If the resulting offspring are all pink (RW), what type of inheritance pattern is demonstrated?

Question 3

If a man with blood type A (genotype $I^A i$) and a woman with blood type B (genotype $I^B i$) have a child, what is the probability that their child will have blood type O (genotype $ii$)?

Question 4

What is the term for a cross between an individual of unknown genotype and a homozygous recessive individual, used to determine the unknown genotype?

Question 5

In pea plants, tall (T) is dominant over short (t). If a heterozygous tall pea plant (Tt) is self-pollinated, what is the expected genotypic ratio of the offspring?