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Tristan's Genetic Vocab
Genetics vocab
12
Science
7th Grade
04/13/2016

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Term
Genetics
Definition
Branch of biology that studies heredity
Term
Heredity
Definition
Passing on of characteristics from parents to offspring
Term
Genes
Definition
Segment of DNA (deoxyribonucleic acid) coding for a certain trait
Term
alleles
Definition
Available forms of a gene (you get one from your mom and one from your dad for a total of 2 per gene)
Term
Dominant
Definition
This form always appears represent by a uppercase letter
Term
Recessive
Definition
This form will not show up if paired with a dominant allele
Term
Genotype
Definition
The 2 letters represented with alleles are present (can only be RR,Rr,r)
Term
Homozygous
Definition
Refers to the RR and rr genotypes meaning the same 2 alleles are present
Term
Homozygous dominant
Definition
RR: meaning 2 dominant alleles are present
Term
Homozygous Recessive
Definition
rr: meaning 2 recessive alleles are present
Term
Heterozygous
Definition
Refers to the Rr genotype meaning of one of each type of alleles are present (also called hybird)
Term
Phenotype
Definition
What the genotype looks like, the physical appearance of a gene
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