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Unformatted text preview: Gametes produced in testes and ovaries Reduction division (two stages) Homologous pairs separated Double stranded chromosomes separated at centromere Produces four daughter cells with 23 chromosomes in each cell 22 autosomes 1 sex chromosome Haploid cells Stages of Embryo Division Fertilized Egg 4-Cell Embryo 8-Cell Embryo Blastocyst Hatching Blastocyst Differentiation – Somatic Cells Hox genes initiate differentiation ~16 cell stage DNA itself not altered...
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- Spring '09
- Biological Anthropology, somatic cells, Identical Somatic Cells