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Inheritance

HBioUnit5

TermDefinition
Mendel Father of Genetics
phenotype physical expression of a trait
genotype genetic make-up of an organism
dominant allele is expressed if the organism inherits one copy of the allele
recessive allele is expressed only if the organism inherits two copies of the allele
homozygous alleles are the same
heterozygous alleles are different
gene a specific sequence of nucleotides that codes for a protein
polygenic trait trait that is determined by 2 or more genes
pedigree diagram that tracks a particular trait in related individuals
incomplete dominance phenotype shows the intermediate form of a trait
codominance both alleles are equally expressed in the phenotype
multiple alleles three or more alleles exist for a gene
sex-linked trait traits that are linked on the X or Y chromosome
allele variant of a gene
monohybrid cross crossing of 1 trait
dihybrid cross crossing of 2 traits
product rule The probability of two independent events occurring together ("and") can be calculated by multiplying the individual probabilities of each event occurring alone.
sum rule The probability of the occurrence of one event OR the other, of two mutually-exclusive events, is the sum of their individual probabilities.
Created by: onceamustang
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