Term
| What is sexual reproduction? |
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Definition
| A type of reproduction in which genetic material is exchanged resulting in offspring |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| egg and sperm join together |
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Term
| What's a zygote (also pronounced zygot-eee)? |
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Definition
| new cell formed from joining egg and sperm |
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Term
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Definition
| mitosis and cell division produce organisms from zygote |
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Term
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Definition
| cell with pairs of chromosomes |
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Term
| Define "Homologus chromosome" |
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Definition
pairs of chromosomes that have the genes for the same traits arranged in the same order
Different organisms have different numbers of chromosomes |
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Term
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Definition
| cells have only one chromosome from each pair |
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Term
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Definition
| sex cell division - one diploid cell divides into 4 haploid cells |
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Term
| What are the phases of meiosis? |
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Definition
| prophase, metaphase, anaphase, telophase both 1 and 2 |
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Term
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Definition
| before meiosis - chromosomes double |
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Term
| What happens in Prophase I? |
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Definition
| nucleus disappears - chromosomes appear in pairs |
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Term
| What happens in Metaphase I? |
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Definition
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Term
| What happens in anaphase I? |
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Definition
| chromosome pairs go to ends of cell |
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Term
| What happens in telephase 1? |
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Definition
| daughter cell form nucleus form |
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Term
| What happens in Meiosis II? |
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Definition
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Term
| What's different about Prophase, metaphase, anaphase, and telephase II |
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Definition
same sequence, but with 1/2 the chromosomes.
FOUR daughter cells are formed |
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Term
| Why is meiosis important? |
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Definition
| Maintains correct diploid number of chromosomes. It also creates variation by producing haploid cells. |
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Term
| How do you maintain diploid cells? |
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Definition
| Haploid cells join together to form a diploid zygot-eee |
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Term
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Definition
| Because sex cells are haploid, their joining insures variation |
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Term
| How are mitosis and meiosis are different? |
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Definition
Mitosis and cell division produce body cells that are gentically identical.
Meiosis produces four haploid sex cells
Meiosis is 2 divisions producing 4 haploid sex cells
Mitosis is 1 division producing 2 diploid body cells |
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Term
| What are the advantages of sexual reproduction? |
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Definition
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Term
| Define Genetic variation. |
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Definition
| disease resistance - ability to adapt to enviromental changes |
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Term
| What's an example of selective breeding? |
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Definition
| broccoli, kholrabi, kale, and cabbage are all from mustard plant. |
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Term
| What are the disadvantages of sexual reproduction? |
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Definition
| time and energy - searching for a mate is dangerous, limited times to have offspring |
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