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16 Cards in this Set
- Front
- Back
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Why do cells need to divide? |
1. To make more organisms 2. In multicellular embryos to develop and grow 3. In multicellular adults for tissue renewal |
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To segregate dna copies into diving cells, chromosomes must... |
Condense |
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Homologous |
Two chromosomes that shows a similar set of genes and over inherited from mom and dad |
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G1 phase |
First gap: cell growth (gets longer) prepare for DNA replication (or undergoes exit from cell cycle = G0 |
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S phase |
Synthesis: replicates DNA |
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G2 phase |
Second gap: some cell growth and prepare for mitosis |
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M phase |
Mitosis and cytokinesis: sister chromosomes are separated into two different cells (mitosis) and two cells are formed (cytokinesis) |
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Four set phase of mitosis |
(PMAT) |
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P= |
Prophase |
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M= |
Metaphase |
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A= |
Anaphase |
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T= |
Telophase |
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Mitosis occurs in what |
Occurs in almost every cell in the body (somatic cells) |
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Meiosis occurs in what |
Occurs in cells that form sperm and egg (germ cells) |
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What happens at the end of meiosis 1? |
Cytokinesis takes place, haploid cells form, and meiosis 2 begins |
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Mitosis divides what? |
Skin cells |
