Meiosis Basics

What is the primary purpose of meiosis?

• To produce identical daughter cells

• To repair damaged cells

• To produce gametes with half the number of chromosomes

• To duplicate the DNA content in a cell

During which stage of meiosis does crossing over occur?

• Prophase I

• Metaphase I

• Anaphase I

• Telophase I

How many divisions are there in meiosis?

• One

• Two

• Three

• Four

What is the result of meiosis?

• Two genetically identical cells

• Four genetically identical cells

• Two genetically varied cells

• Four genetically varied cells

Which of the following contributes to genetic variation in meiosis?

• DNA replication

• Crossing over

• Mitotic spindle formation

• Cytokinesis

At the end of meiosis I, how many chromosomes does each daughter cell have compared to the original cell?

• The same number

• Half the number

• Double the number

• One-fourth the number

What is the significance of crossing over in meiosis?

• It ensures that daughter cells are identical.

• It reduces the number of chromosomes in each cell.

• It increases genetic variation among offspring.

• It duplicates the DNA.

During which phase of meiosis are tetrads formed?

• Prophase I

• Metaphase I

• Anaphase I

• Telophase I

What is a tetrad?

• A pair of homologous chromosomes

• A group of four chromatids

• A single replicated chromosome

• Two non-homologous chromosomes

How does meiosis contribute to evolution?

• By ensuring offspring are clones of their parents

• By reducing genetic variation in a population

• By increasing genetic variation through recombination and independent assortment

• By maintaining the chromosome number across generations