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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 |