3.2.1 Meiosis

What is the role of meiosis in sexual reproduction and genetic variation?

• the process self-replicates, making identical copies of a single cell. It produces more cells for growth and repair.

• the process randomly shuffles genes across chromosomes and then randomly separates half of those chromosomes into each gamete. The two gametes then randomly fuse to form a new organism.

What kind of cells are produced at the end of meiosis?

• uniloid

• diploid

• triploid

• haploid

What causes genetic variation in meiosis?

• chromosomes lining up
• crossing over of chromosomes
• separation of chromosomes
• chromosomes pulling apart

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Which cellular process is shown?

• meiosis
• endocytosis
• mitosis
• phagocytosis

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Which of the following best describes meiosis?

• It is carried out in all tissues theat require cell replacement
• It occurs only in cells in the reproductive structures of an organism
• It happens in all of the tissues except the brain and spinal cord
• It is the first stage of mitosis

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products of meiosis are genetically

• different
• identical

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A human zygote should have _____ chromosomes inside.

• 46
• 23
• 92
• 64

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Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.

• 23, 46
• 46, 23
• 2, 4
• 50, 100

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How many daughter cells does Meiosis create?

• 2
• 4
• 8
• 1

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Interphase is responsible for:

• Transcription and Translation

• Creating daughter cells

• Growth, DNA replication, and general cell processes

• Preventing mutations