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meiosis vocab
Term | Definition |
---|---|
gamete | reproductive cells (egg and sperm) |
haploid | 23 chromosomes which contains only 1 of the paired homologous chromosomes |
oogenesis | production of egg |
ovum/ova | the egg from the female |
sperm | the gamete from the male |
zygote | fertilized egg |
tetrad | is a group of 4 chromotids |
synapsis | each chromosome lines up with its homologous pair and becomes attached to the centromere |
fertilization | restores the diploid number 2n and union of egg and sperm |
disjunction | separation of homologous chromosomes |
gametogenesis | production of gametes |
homologous chromosomes | chromosomes that have the same length, appearance, and copies of genes |
crossing over | exchange of chromosomes between homologous chromosomes during meiosis |
gonads | reproductive organs (testes and ovaries) |
spermatogenesis | production of sperm |
polar bodies | haploid cells produced during meiosis in the female |
meiosis | process of cell division in sexual reproduction |
variation | difference |
nondisjunction | when the homologous chromosomes do not separate |
gene | specific region of dna that codes for a particular protein |