Meiosis Quiz Sb1a

How many cells are created at the end of Meiosis I?

• 2
• 4
• 1
• 6

What is the primary purpose of meiosis?

• To produce genetically identical somatic cells for growth and repair.
• To produce haploid gametes (sex cells) for sexual reproduction.
• To increase the ploidy level of a cell.
• To perform DNA replication before mitosis.

A human body cell (somatic cell) is diploid (2n) with 46 chromosomes. How many chromosomes will a resulting gamete (sex cell) have after meiosis?

(a)  

In which phase of meiosis does 'crossing over' occur, resulting in genetic recombination between homologous chromosomes?

• Prophase I
• Metaphase II
• Anaphase I
• Telophase II
• Interphase

Identify all processes that contribute to genetic variation during sexual reproduction.

• Independent assortment of chromosomes in Metaphase I.
• Crossing over in Prophase I.
• DNA replication.
• Random fertilization.

Which of the following describes the arrangement of homologous chromosome pairs at the cell's equator during Metaphase I?

• Sister chromatids line up randomly.
• Homologous pairs line up randomly.
• Individual chromosomes line up single file.
• The cell skips Metaphase I entirely.

Which of the following events occur in Meiosis I but NOT in Mitosis?

• Formation of spindle fibers
• Separation of homologous chromosomes
• Lining up of chromosomes at the equator
• Crossing over

How many rounds of cell division occur during meiosis?

• One
• Two
• Three
• Four

If an organism's diploid number (2n) is 12, what is the haploid number (n)?

Which cellular component is responsible for pulling chromosomes apart during anaphase I and anaphase II?

• Nucleolus
• Cell membrane
• Spindle fibers
• Ribosomes