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6.1 & 6.2 Vocab
Term | Definition |
---|---|
somatic ell | cell that makes up all of the body tissues and organs, except gametes |
gamete | sex cell; an egg or a sperm cell |
homologous chromosomes | chromosomes that have the same length, appearance,, and copies of genes, although the alleles may differ |
autosome | chromosomes that contains genes for characteristics not directly related to the sex of the organism |
sex chromosomes | chromosome that directly controls the development of sexual characteristics |
sexual reproduction | process by which two gametes fuse and offspring that are a genetic mixture of both parents are produced |
fertilization | fusion of an egg and sperm cell |
diploid | cell that has two copies of each chromosome, one from an egg and one from a sperm |
haploid | cell that has only one copy of each chromosomes |
meiosis | form of nuclear division that divides a diploid cell into haploid cells; important in forming gametes for sexual reproduction |
gametogenesis | process by which gametes are produced through the combination of meiosis and other maturational |
sperm | male gamete |
egg | female gamete |
polar body | haploid cell produced during meiosis in the female of many species; these cells have little more than DNA and eventually disintegrate |