Meiosis STARR Release Questions

Multiple Choice

Crossing over between homologous chromosomes during meiosis is significant in heredity. This process most likely leads to an increase in which of the following?

• The expression of dominant traits.

• Number of gametes.

• The occurrence of polyploidy.

• Genetic variation.

Multiple Choice

During meiosis, homologous chromosomes exchange genetic material. This exchange of genetic material---

• increases the genetic variation.

• reduces the diploid number to the haploid number.

• increases the haploid number to the diploid number.

• reduces the probability of mutations.

Multiple Choice

A cellular process is shown. Which of these is the most likely result of the process shown in the diagram?

• Chromosome replication will increase to avoid errors that result in mutations.

• Offspring will no longer express traits from previous generations.

• Gametes will contain new allele combinations.

• Chromatids will have less genetic variety.

Multiple Choice

Gametes produced by an organism contain a combination of genes from that organism. In every gamete, this combination is--

• the same because it is created from the same DNA.

• the same because chromosomes are copied prior to meiosis.

• different due to DNA replication prior to mitosis.

• different due to independent assortment during meiosis.

Multiple Choice

Which diagram demonstrates how crossing-over contributes to genetic variation during meiosis?

Multiple Choice

A cellular process is shown. Which statement best describes the significance of this process?

• The process allows organisms to grow and heal.

• The process produces clones of the parent organism.

• The process copies DNA before cell division.

• The process creates genetic variation in the resulting cells.