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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?

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