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genetics vocab
N/A
14
Science
7th Grade
05/24/2011

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Term
fertilization
Definition
joining of the male and female sex cell
Term
punnett square
Definition
a chart that shows all possible combonations of alleles that can result from a genetic cross
Term
traits
Definition
physical characteristics of an organism
Term
phenotype
Definition
an organism's physical appearance
Term
zygote
Definition
first body cell formed from fertilization
Term
heredity
Definition
the passing of traits from parents to offspring
Term
homozygous
Definition
(Purebred) an organism that has two identical alleles for a trait
Term
dominant allele
Definition
an allele whose traits always show up when present
Term
genes
Definition
factors that can control traits
Term
heterozygous
Definition
(Hybrid) an organism that has two different alleles for a trait
Term
alleles
Definition
different forms of a gene
Term
gamete
Definition
sex cell
Term
genotype
Definition
an organism's genetic makeup or allele combination
Term
Recessive Allele
Definition
an allele whose traits whose trait is covered up when a dominant allele is present
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