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Ch 6 Less 1, 2 Vocab
BIOLOGY
| Term | Definition |
|---|---|
| somatic cell | body cells that make up most of your body tissues and organs |
| gamete | sex cels, ova or eggs, in the female, and spermatozoa, or sperm cells, in the male |
| homologous chromosomes | two chromosomes, one inherited from the mother, one from the father, that have the same length and general appearance |
| autosome | chromosomes that contain genes for characteristics not directly related to the sex of an organism |
| sex chromosome | directly control the development of sexual characteristics |
| sexual reproduction | involves the fusion of two gametes, resulting in offspring that are a genetic mixture of both parents |
| fertilization | actual fusion of an egg and a sperm cell |
| diploid | cell has two copies of each chromosome, one copy from the mother, one copy from the father |
| haploid | cell has only one copy of each chromosome |
| meiosis | form of nuclear division that divides a diploid cell into haploid cells |
| gametogenesis | production of gametes |
| sperm cell | male gamete, much smaller then the egg that gives the embryo DNA |
| egg cell | much larger then the sperm cell, a female gamete |
| polar bodies | cells with little more than DNA that are eventually broken down |