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15 terms

Meiosis

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Heredity
passing on of characterisitscs from parents to offspring
traits
the herediable characterisitcs
Genetics
study of heredity
phenotype
physical appearance of the coresponding genotype.
genotype
genetic makeup
co- dominance
have 2 alleles neither of which are dominant over the other.
multiple alleles
have more than 2 allele choices.
polygenetic inheritance
have multiplying genes controlling the same trait.
sex- linked genes
because there is no heteorzygote with makes they always get the disease
diploid
2 copies of each chromosones all somatic cells
to produce more sperm and egg
why does meiosis happen in the sex cells?
nondisjunction
the homologous chromosone dont divde evenly
trisomy
get an extra chromone
monosomy
one less chromosone.
becasue they reproduce in an area
why do most recessive diseases affect small populations?