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15 Cards in this Set

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  • Back
fertilization
the process by which haploid gametes join to form a diploid zygote
meiosis
process during cell division in which the nucleus of a cell completes two successive divisions that produce four cells (gametes), each with a chromosome number that has been reduced by half
sporophyte
diploid phase in the type of life cycle known as alternation of generations; diploid individual that produces spores
crossing-over
the exchange of reciprocal segments of DNA by homologous chromosomes at the beginning of meiosis; source of genetic recombination
spermatogenesis
process by which gametes are produced in male animals
independent assortment
random distribution of homologous chromosomes during meisis
sexual reproduction
reproduction in which gametes from opposite sexes or mating types unite to form a zygote
sperm
male gamete
asexual reproduction
reproduction that involves only one parent and results in genetically identical offspring
ovum
a mature egg cell
oogenesis
process by which gametes are produced in female animals
clone
organism produced by asexual reproduction that is genetically identical to its parent
life cycle
entire lifespan of an organism; summary of all of the stages of an organism
gametophyte
haploid phase in the type of life cycle known as alternation of generations; haploid individual that produces gametes
spore
an asexual, resting, reproductive haploid cell