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chapter 6

science terms

TermDefinition
differentiation In humans, the process in which cell layers will eventually form the organs and tissue in the baby.
diploid number Two sets of chromosomes. Number of human cells
embryo The stage of a multicellular organism that develops a zygote.
embryonic development Early development of a multicellular organisms following fertilization.
external fertilization Fertilization in which a sperm cell and an egg cell unite outside the bodies of the parents.
fertilization The process during which an egg cell in penetrated by a sperm cell and the haploid gene.
gametes Specialized cells necessary for reproduction.
genetic diversity inherited genetic differences in a species that give many organisms a survival advantage.
haploid number Each set of inherited chromosomes, half the diploid number.
homologous chromosomes A pair of matching chromosomes.
internal fertilization fertilization in which sperm cells are deposited inside the females body where they meet egg cells.
mating The process by which gametes arrive in the same place at the same time.
meiosis The process that produce gametes with half the number of chromosomes as body cells.
sexual reproduction reproduction that requires two parents and produces offspring that are genetically different from each other , from either parent, and from any other member of their species.
zygote The new diploid formed by the process of fertilization, which receives half its female parent and half from its male parent.
Created by: tmandur
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