10.2 Inheritance

What is the primary consequence of genes being linked on the same chromosome?

A. They segregate independently during meiosis.

B. They tend to be inherited together.

C. They exhibit continuous variation.

D. They are controlled by multiple genes.

Which type of variation is typically exhibited by polygenic traits?

A. Discrete variation

B. Continuous variation

C. Limited variation

D. No variation

What is the purpose of a Chi-squared test in genetics?

A. To determine the linkage of genes.

B. To test the validity of a genetic hypothesis.

C. To identify polygenic traits.

D. To classify variation as discrete or continuous.

How do unlinked genes behave during meiosis?

A. They segregate dependently.

B. They do not segregate.

C. They segregate independently.

D. They form tetrads.

Which type of variation includes traits that have a limited number of phenotypes?

A. Continuous variation

B. Polygenic variation

C. Discrete variation

D. Dependent variation

a) Explain how linked genes are inherited together during meiosis and provide an example of such genes. [4]

b) Describe how the chi-squared test can be used to determine whether the observed outcomes of a genetic cross match the expected outcomes. [3]

a) Define discrete and continuous variation and give an example of a trait that exhibits each type of variation. [3]

b) Explain how polygenic traits contribute to continuous variation within a population. [4]

a) Describe the principle of independent assortment and explain how it contributes to genetic diversity in offspring. [4]

b) Provide an example of a trait that is likely to be influenced by unlinked genes and explain why. [3]

a) Explain the concept of gene linkage and how it affects the assortment of alleles during gamete formation. [4]

b) How does the location of genes on different chromosomes contribute to the independent assortment of genes? [3]

c) Why might a chi-squared test be applied in a study of inheritance and what would a significant result indicate? [3]

a) Define polygenic traits and give an example. How do they contribute to continuous variation? [4]

b) Differentiate between discrete and continuous variation with examples. [3]

c) How does the random alignment of chromosomes during metaphase I of meiosis lead to genetic diversity? [3]