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Questions and Answers
What is the main difference between mitosis and meiosis?
How many chromosomes are found in human somatic cells?
What is the ploidy of daughter cells produced in mitosis?
What is the purpose of meiosis?
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How many cycles of cell division occur in meiosis?
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What is the ploidy of gametes?
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What is the result of the fusion of a male and female gamete?
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When does DNA replication occur in meiosis?
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What is synapsis in meiosis?
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How many pairs of chromosomes are involved in synapsis in meiosis?
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Study Notes
- Mitosis produces genetically identical cells while meiosis produces gametes.
- Human somatic cells contain 23 pairs of chromosomes, or 46 chromosomes in total.
- Each chromosome pair consists of one from the father and one from the mother.
- Daughter cells produced in mitosis are diploid (2n = 46) while those produced in meiosis are haploid (n = 23).
- Meiosis involves two cycles of cell division and produces four haploid cells.
- Gametes contain only one member of each homologous pair of chromosomes.
- The fusion of a male and female gamete produces a cell with the normal number of chromosomes.
- DNA replication occurs before meiosis, producing duplicated chromosomes with two chromatids each.
- In meiosis, maternal and paternal chromosomes come together in synapsis.
- Synapsis involves 23 pairs of chromosomes.
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