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Questions and Answers
What is the function of meiosis in sexually-reproducing animals?
What is the function of meiosis in sexually-reproducing animals?
- To reduce the number of chromosomes in the parents
- To increase the number of alleles in the offspring
- To create genetically identical offspring
- To ensure the same number of chromosomes in the offspring as in the parents (correct)
What type of cells does meiosis specifically occur in?
What type of cells does meiosis specifically occur in?
- Stem cells in the bone marrow
- Epithelial cells in the skin
- Gamete producing cells in the gonads (correct)
- Somatic cells in the brain
Which stage of the eukaryote cell cycle is the longest?
Which stage of the eukaryote cell cycle is the longest?
- Interphase (correct)
- Anaphase
- Metaphase
- Prophase
What is the purpose of reducing the number of alleles in the gametes that produce the zygote?
What is the purpose of reducing the number of alleles in the gametes that produce the zygote?
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How many haploid cells are produced at the end of meiosis?
How many haploid cells are produced at the end of meiosis?
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Study Notes
Meiosis in Sexually-Reproducing Animals
- Meiosis is a type of cell division that occurs in sexually-reproducing animals, serving to increase genetic diversity and reduce the number of chromosomes by half, ensuring proper fertilization.
Cells Involved in Meiosis
- Meiosis specifically occurs in reproductive cells, known as gametes, which include eggs and sperm.
Eukaryote Cell Cycle
- The longest stage of the eukaryote cell cycle is interphase, which is the period between cell divisions where the cell grows, replicates its DNA, and prepares for division.
Purpose of Allele Reduction
- Reducing the number of alleles in gametes ensures that the zygote produced during fertilization will have a unique combination of alleles, increasing genetic diversity in the offspring.
Outcome of Meiosis
- Meiosis produces four haploid cells, each containing half the number of chromosomes as the original diploid cell.
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