Unit 7 Vocab (Final)
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passing of traits from parents to offspring
heredity
study of heredity and genes
genetics
inherited characteristics
traits
dominant alleles mask recessive alleles
Law of dominance
allele pairs segregate during gamete formation
Law of segregation
trait expressed when at least one dominant allele is present
dominant trait
trait expressed only when two recessive alleles are present
recessive trait
genetic makeup of an organism
genotype
observable traits of an organism
phenotype
having two different alleles for a trait
heterozygous
diagram used to predict genetic outcomes
Punnett square
first generation in a genetic cross
P generation
first offspring generation
F1 generation
second offspring generation
F2 generation
different forms of a gene
allele
having two identical alleles
homozygous
having two different alleles
heterozygous
organisms that always produce the same trait in offspring
true-breeding
genetic cross involving one trait
monohybrid cross
genetic cross involving two traits
dihybrid cross
cross used to determine an unknown genotype
test cross
probability rule for finding chances of combined events
ROM
probability rule for finding chances of either event occurring
ROA
one allele completely masks the other
complete dominance