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passing on of characterisitscs from parents to offspring


the herediable characterisitcs


study of heredity


physical appearance of the coresponding 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


2 copies of each chromosones all somatic cells

to produce more sperm and egg

why does meiosis happen in the sex cells?


the homologous chromosone dont divde evenly


get an extra chromone


one less chromosone.

becasue they reproduce in an area

why do most recessive diseases affect small populations?

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