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19 Cards in this Set
- Front
- Back
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Haploid |
Have only one chromosome from each pair; example sex cells
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sexual reproduction
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production of offspring through the combination of egg and sperm
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Diploid
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Pairs of chromosomes; example would be body cells
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Homologous chromosomes
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pairs of chromosomes that have genes for the same traits arranged in the same order
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Prophase I
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Chromosomes that are duplicated during interphase remain sister chromatids; homogolous chromosomes join and form pairs; nuclear membrane breaks apart
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Metaphase I
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Homologous chromosome pairs align along the middle of the cell; spindle fibers attach to each pair
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Anaphase I
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Pairs of duplicated homologous chromosomes separate and are pulled into opposite ends of the cell; sister chromatids stay together
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Telophase I
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nuclear membrane forms around each group of chromosomes; the cytoplasm divides forming two daughter cells; sister chromatids remain together
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Prophase II
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chromosomes do not duplicate; nuclear membrane breaks apart
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Metaphase II
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sister chromatids align along the middle of the cell
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Anaphase II
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sister chromatids of each duplicated chromosome are pulled apart and move to opposite sides of the cell
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Telophase II
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a nuclear membrane forms around each set of chromatids, which are called chromosomes again; the cytoplasm divides and 4 cells form; each cell has half the number of chromosomes as the original cell
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Chromosomes
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A doubled rod of condensed chromatin; contains DNA that carries genetic information.
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Zygote
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Diploid cell formed when a sperm fertilizes an egg.
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Gamete
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Haploid reproductive cells
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Meiosis
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process involving two divisions of the nucleus and cytoplasm to make 4 haploid cells
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egg
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female sex cell that forms in the ovary
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sperm
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male sex cell that forms in the testis
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fertilization
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joining of egg and sperm |
