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Biology CP 3

Embryogenesis and Development

QuestionAnswer
ampulla widest part of the Fallopian tube; most common site of fertilization
acrosomal apparatus tubelike structure that extends to and penetrates the cell membrane when sperm comes in contact with the secondary oocyte
cortical reaction release of calcium ions causing depolarization of the cell membrane of the ovum; depolarization purposes: (1) prevents fertilization by multiple sperm cells, (2) increased calcium conc. increases the metabolic rate of the newly formed diploid zygote
zygote diploid (2n) well that results from the fusion of two haploid (n) gametes
fertilization membrate structure created by the cortical reaction after fertilization of an ovum by a sperm cell: prevents fertilization of an ovum by multiple sperm cells
dizygotic fraternal twins
Created by: gmasell
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