Question 1

Which of the following best describes the main difference between mitosis and meiosis in terms of chromosome number in the resulting daughter cells?

Accepted Answer

Mitosis produces daughter cells with the same chromosome number as the parent cell, while meiosis produces daughter cells with half the chromosome number.

Question 2

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 3

A human cell with 46 chromosomes undergoes mitosis. How many chromosomes will each daughter cell have after cytokinesis?

Accepted Answer

$$46$$

Question 4

Which of the following events increases genetic variation during meiosis?

Accepted Answer

Crossing over during prophase I

Question 5

In a diploid organism with a chromosome number of $$2n = 16$$, how many chromatids are present in a cell at the end of mitotic prophase?

Accepted Answer

$$32$$

Question 6

Which structure is responsible for attaching chromosomes to the spindle fibers during cell division?

Accepted Answer

Kinetochore

Question 7

What is the physical location of a gene on a chromosome called?

Accepted Answer

Locus

Question 8

Which of the following best explains Mendel’s Law of Segregation at the chromosomal level?

Accepted Answer

The separation of homologous chromosomes during meiosis I

Question 9

A cell is observed with chromosomes aligned at the metaphase plate, each attached to spindle fibers from both poles. Which stage is this cell in?

Accepted Answer

Metaphase

Question 10

Which of the following statements about homologous chromosomes is TRUE?

Accepted Answer

They carry the same genes but may have different alleles.

Question 11

In which phase of meiosis does independent assortment of chromosomes occur?

Accepted Answer

Metaphase I

Question 12

Which of the following is NOT a function of mitosis in multicellular organisms?

Accepted Answer

Production of gametes

Question 13

If a cell with genotype $$Bb$$ undergoes mitosis, what will be the genotype of the daughter cells?

Accepted Answer

$$Bb$$

Question 14

Which checkpoint in the cell cycle ensures that DNA has been accurately replicated before mitosis begins?

Accepted Answer

G2 checkpoint

Question 15

What is the outcome of crossing over during meiosis?

Accepted Answer

Exchange of genetic material between non-sister chromatids

Question 16

Which of the following best describes the role of the centromere during cell division?

Accepted Answer

It is the region where spindle fibers attach to separate chromatids.

Question 17

In a medical scenario, a patient’s cells are found to have abnormal chromosome numbers in their somatic cells. Which process is most likely malfunctioning?

Accepted Answer

Mitosis

Question 18

Which of the following is TRUE regarding the products of meiosis in humans?

Accepted Answer

Each gamete contains 23 chromosomes.

Question 19

Why is the second division of meiosis (Meiosis II) necessary?

Accepted Answer

To separate sister chromatids

Question 20

Which process is responsible for the production of spores in plants?

Accepted Answer

Meiosis

Mitosis and Meiosis: Cell Division and Chromosome Transmission

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