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26 Cards in this Set
- Front
- Back
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Body cells are called somatic cells |
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Sex cells are called gametes |
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Sex cells are different than autosomes and are used to create new cells |
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What is 2N |
Diploid |
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What is 1N |
Haploid |
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What is XX |
Female |
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What is XY |
Male |
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What is nondisjunction |
When chromosomes or sister chromatids fail to separate during anaphase |
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What is trisomy |
Nondisjunction of the 21st pair of chromosomes causes down syndrome |
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Klinefelter syndrome |
Trisomy in the sex chromosomes resulting in XXY |
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P generation |
Parent generation |
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F1 generation |
First generation of offspring |
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F2 generation |
Second generation of offspring |
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Hybrids |
The offspring of parents with different traits |
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Spermatogenesis |
Producing sperm cells (testies) |
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Oogenesis |
Producing egg cells (ovaries) |
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Sexual reproduction requires two parents |
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Must have male and female to produce sperm and egg |
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Sexual reproduction involves |
Gametes , fertilization and zygote |
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If an organism is the result of sexual reproduction it will have two sets of chromosomes |
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One set comes from the father and one set comes from the mother |
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Homologous chromosomes |
2 copies of each chromosomes |
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Homologous chromosomes Carry the same genes |
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Egg and sperm cells must have half the number of chromosomes |
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Meiosis |
The process by which the number of chromosomes per cell is cut in half by separating homologous chromosomes |
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All body cells except sex cells are diploid |
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