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Biology Chapter 11-4
Terms related to meiotic cell division.
| Term | Definition |
|---|---|
| zygote | fertilized egg |
| haploid | half of the chromosome number |
| sex chromosome | XX for females, XY for males |
| tetrad | four chromatids formed during meiosis |
| allele | form of a gene |
| autosomes | chromosomes #1-22, Determine Traits |
| meiosis | produces 4 different haploid gametes |
| genes | determines traits |
| trait | feature or characteristic |
| homologous chromosomes | corresponding chromosomes, one from each parent |
| crossing over | exchange of alleles |
| fertilization | when egg meets sperm |
| gamete | sperm or egg cell |
| chromosome | threadlike structure, contains DNA |
| diploid | full set of chromosomes |
| prophase I | variation phase, crossing over occurs |
| anaphase I | homologous pairs separate |
| anaphase II | sister chromatids separate |