Term
| Which cells are somatic cells? What is another type of cells? |
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Definition
| All cells besides egg and sperm, which are gametes. |
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Term
| How many chromosomes do human somatic cells have? |
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Definition
| 46: 22 pairs of autosomes (homologous chromosomes), 1 pair of sex chromosomes (X,Y male, XX female) |
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Term
| True or false? Chromosomes in homologous pairs (1 maternal, 1 paternal) are identical. |
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Definition
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Term
| What happens in interphase I and prophase I? |
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Definition
During interphase I, chromosomes are duplicated. The sister chromatids then attach to their homologous pair (giving 23 tetrads) in a process known as synapsis.
During prophase I, there is crossover at chiasma between the homologous chromosomes. These new chromosomes are called recombinant chromosomes.
The rest of meiosis I and meiosis II generally resembles mitosis. |
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Term
| What percent of meiosis does prophase I take up? |
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Definition
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Term
| True or false? The daughter cells after both meiosis I and meiosis II are both considered haploid. |
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Definition
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Term
| What two events in meiosis lead to genetic diversity? |
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Definition
1. independent assortment of chromosomes (when aligned along metaphase plate)
2. crossing over |
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