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Genetics

quiz

TermDefinition
heredity the passing of traits from parents to offspring
environment any outside force acting on an organism
genetics science of studying traits and heredity
genes sequences of DNA that determine traits
alleles different expressions of a gene/trait (ex. Tall vs short)
traits characteristics of an organism
species traits characteristics that all members of a species share (how they are alike)
individual traits characteristics That make each organism of a species unique (how individuals are different)
gene pool all genes present in a population of organisms
dominant allele (trait) that prevents a recessive allele from being expressed ** capital letter
recessive allele that is prevented from showing (by a dominant one) ** lower case letter
genotype symbols used to represent a trai (ex. - BB, Bb, bb)
phenotype physical expression of a trait (ex. - brown eyes, blue eyes)
homozygous both alleles for a gene are identical (ex. - BB, bb)
heterozygous alleles for a gene are not identical (ex. Bb)
hybrid offspring produced by parents with different traits
gregor mendel father of genetics
chromosome theory genes are located on chromosomes of an organism
principle of dominance some alleles can prevent others from showing
law of segregation traits (alleles) separate from each other when they form the gametes of an organism
law of independent assortment alleles for different traits are inherited separately. (inheritance of one trait does not influence another)
probability the chances (likelihood) of an event occurring
law of large numbers as more trials are performed, probabilities become more accurate
punnets square tool used to predict the results of a cross between traits
monohybrid crosses crossing alleles for a single trait
Created by: KiahnaL
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