Term
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Definition
| The number of sets of chromosomes in a cell |
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Term
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Definition
| One set of chromosomes, as in reproductive cells of gametes: egg and sperm |
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Definition
| Two sets of chromosomes, as in the body cells of most plants and animals |
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Definition
| Three sets of chromosomes, as in some plants, like bananas |
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Term
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Definition
| Four sets of chromosomes, as in some plant species, especially plants with big, showy flowers |
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Term
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Definition
| Reduction division; we reduce the number of chromosomes from diploid to haploid |
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Term
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Definition
| Non-reproductive or body cells, usually diploid |
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Term
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Definition
| Reproductive cells; egg or ova and sperm; they're haploid |
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Term
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Definition
| The first round of division in meiosis |
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Term
| What is the result of Meiosis I? |
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Definition
| We reduce the number of chromosomes from diploid to haploid |
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Term
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Definition
| Chromosomes that are the same size, the same shape and they contain the same chromosomes in the same order |
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Term
| Where do you get your homologous chromosomes from? |
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Definition
| They exist in pairs: you get one from mom and one from dad |
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Term
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Definition
| A picture of the all the chromosomes in a cell |
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Term
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Definition
| The pairing up of homologous chromosomes during Prophase I of meiosis |
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Term
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Definition
| The exchange of genetic material between non-sister chromatids during synapsis of Prophase I of meiosis |
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Term
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Definition
| The paired homologous chromosomes line up in the middle of the cell IN PAIRS |
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Term
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Definition
| The homologous chromosomes separate during Anaphase I, but the centromeres do not split. |
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Term
| What is the result of Meiosis I |
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Definition
| The chromosomes number is reduced from diploid to haploid, crossing over has occurred |
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Term
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Definition
| The second round of division in meiosis, it proceeds just like mitosis; it separates the sister chromatids during Anaphase II |
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Term
| What are the products of Meiosis? |
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Definition
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Term
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Definition
| A pause between Meiosis I and Meiosis II, DNA is NOT copied; it can be very short or very long, depending on the species of organism |
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Term
| What are the three sources of variation in gamete formation? |
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Definition
| Independent assortment, crossing over, random fertilization |
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Term
| What is independent assortment |
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Definition
| The orientation of the homologous pairs during Metaphase I can be either left-right or right-left; each chromosome pair will separate or assort independent from the others |
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Term
| How many different kinds of gametes can a human make? |
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Definition
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Term
| What is random fertilization |
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Definition
| Any possible egg can be fertilized by any possible sperm; so 8 million x 8 million means each person is one out of 64 million possible combinations |
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Term
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Definition
| The product of fertilization; the result of the fusion of an egg and a sperm |
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Term
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Definition
| Another word for fertilization |
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