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Chapter 6 vocab

Science 9

TermDefinition
differentiation In humans, the process in which cell layers will eventually form the organs and tissues of a baby
diploid number two sets of chromosomes (2n); the diploid number for a human cell is 46 (2 x 23) (6.1)
embryo the stage of a multicellular organism that developed from a zygote
embryonic development early development of a multicellular organism following fertilization
external fertilization fertilization in which a sperm cell and an egg cell unite outside the boodies of the parents
fertilization the process during which an egg cell is penetrated by a sperm cell and the hyploid genetic information of both male and female gametes combines
gametes specialized cells necessary for reproduction; in animals, male gametes are called sperm cells and female gametes are called egg cells
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(n); humans inherit one set of 23 chromosomes from their female parent and one set of 23 chromosomes from their male parent
homologous chromosomes a pair of matching chromosomes
internal fertilization fertilization in which sperm cells are deposited inside the female's 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 produces 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 (Zn) cell formed by the process of fertilization, which receives half its chromosomes from its female parent and half from its male parent
Created by: skyeball
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