Question 1

Which of the following best describes the outcome of meiosis in humans?

Accepted Answer

Four haploid cells, each genetically distinct from the parent cell

Question 2

What is the primary importance of sexual reproduction in evolution?

Accepted Answer

It increases genetic diversity within a population

Question 3

During meiosis, which process is responsible for the exchange of genetic material between homologous chromosomes?

Accepted Answer

Crossing over

Question 4

Which of the following equations correctly represents the chromosome number change during meiosis in humans?

Accepted Answer

$$2n \rightarrow n$$

Question 5

A cell with 6 chromosomes undergoes mitosis. How many chromosomes will each daughter cell have after division?

Accepted Answer

$$6$$

Question 6

Which mechanism during meiosis contributes most directly to genetic variation in gametes?

Accepted Answer

Random alignment of homologous chromosomes during metaphase I

Question 7

What is the difference between sister chromatids and homologous chromosomes?

Accepted Answer

Sister chromatids are identical copies of a chromosome, while homologous chromosomes are similar but not identical chromosomes inherited from each parent

Question 8

Which phase of meiosis is most directly responsible for reducing the chromosome number by half?

Accepted Answer

Anaphase I

Question 9

If an organism’s somatic cells are diploid ($$2n$$), what is the ploidy of its gametes after meiosis?

Accepted Answer

Haploid ($$n)$$

Question 10

Which of the following best explains why siblings from the same parents can look different from each other?

Accepted Answer

Random fertilization and genetic recombination during meiosis

Question 11

Which of the following is a key difference between mitosis and meiosis?

Accepted Answer

Mitosis maintains chromosome number, while meiosis reduces it by half

Question 12

A mutation occurs in a gene on a maternal chromosome. Which process could result in this mutation being passed to offspring?

Accepted Answer

Meiosis in gamete-producing cells

Question 13

Which equation represents the possible number of chromosome combinations due to independent assortment in a species with $$n$$ chromosome pairs?

Accepted Answer

$$2^n$$

Question 14

During which stage of meiosis does crossing over occur?

Accepted Answer

Prophase I

Question 15

Which of the following scenarios best illustrates the concept of homologous chromosomes?

Accepted Answer

Two chromosomes, one from each parent, carrying genes for eye color at the same locus

Question 16

Which process ensures that gametes produced by meiosis are genetically unique?

Accepted Answer

Crossing over and independent assortment

Question 17

If a diploid cell with $$2n = 8$$ undergoes meiosis, how many chromosomes will each resulting gamete contain?

Accepted Answer

$$4$$

Question 18

Which of the following is NOT a source of genetic variation in sexually reproducing organisms?

Accepted Answer

Replication of DNA during mitosis

Question 19

Why is it important that meiosis produces haploid cells?

Accepted Answer

To maintain a constant chromosome number after fertilization

Question 20

Which of the following best describes the relationship between genes and chromosomes?

Accepted Answer

Genes are segments of DNA located on chromosomes

Inheritance, Meiosis, and Genetic Variation

Study Guide - Practice Questions

Study Guide - Flashcards