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type of cell division where one body cell produces four gametes, each containing half the number of chromosomes as a parent's body cell
failure of homologous chromosomes to separate properly during meiosis; results in gametes with too many or too few chromosomes
cell with one of each kind of chromosome; is said to contain a haploid, or n, number of chromosomes
characteristic that is inherited; can be either dominant or recessive
observed trait of an organism that masks the recessive form of a trait
trait of an organism that can be masked by the dominant form of a trait
when there are two identical alleles for a trait
male and female sex cells; sperm and eggs
outward appearance of an organism, regardless of its genes
branch of biology that studies heredity
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trait
characteristic that is inherited; can be either dominant or recessive
haploid
cell with one of each kind of chromosome; is said to contain a haploid, or n, number of chromosomes
meiosis
type of cell division where one body cell produces four gametes, each containing half the number of chromosomes as a parent's body cell
recessive
trait of an organism that can be masked by the dominant form of a trait
phenotype
outward appearance of an organism, regardless of its genes
genetics
branch of biology that studies heredity
nondisjunction
failure of homologous chromosomes to separate properly during meiosis; results in gametes with too many or too few chromosomes
