3. Genetics and Inheritance

Mendelian Genetics — Quiz

Test your understanding of mendelian genetics with 5 practice questions.

Practice Questions

Question 1

Which of the following best describes the term 'heterozygous' in the context of Mendelian genetics?

Question 2

In a dihybrid cross between two plants with genotypes $AaBb$ and $Aabb$, what is the probability that an offspring will have the genotype $Aabb$?

Question 3

If a plant with genotype $TtYy$ is crossed with a plant with genotype $Ttyy$, what is the probability that an offspring will be short and green, assuming $T$ is dominant for tall and $t$ is recessive for short, and $Y$ is dominant for yellow and $y$ is recessive for green?

Question 4

In a cross between a plant with genotype $RrYy$ and another plant with genotype $rryy$, what is the expected phenotypic ratio of the offspring, assuming $R$ is dominant for round seeds, $r$ is recessive for wrinkled seeds, $Y$ is dominant for yellow seeds, and $y$ is recessive for green seeds?

Question 5

If a plant with genotype $Aa$ is crossed with a plant with genotype $aa$, what is the probability that the offspring will show the dominant phenotype, assuming $A$ is dominant over $a$?