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HHS Biology 04 (11 cards)
Genetics
11
Biology
9th Grade
03/18/2011

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Term
allele
Definition
one of two or more forms of a particular gene
Term
homozygous
Definition
having two like genes for the same trait
(example: BB)
Term
heterozygous
Definition
having two unlike genes for the same trait (example: Bb)
Term
recessive
Definition
gene of a trait which is hidden when a dominant gene is present
Term
dominant
Definition
gene whose trait always shows itself
Term
genes
Definition
parts of a chromosome that control inherited traits
Term
genotype
Definition
genetic make-up of an organism represented by alleles (example: Bb or BB or bb)
Term
phenotype
Definition
physical characteristics or features (example: red hair; pink flowers)
Term
gamete
Definition
reproductive cell produced during meiosis
Term
sex-linked traits
Definition
a gene that is on the X or Y chromosome
Term
carrier
Definition
an organism that has a recessive gene for a trait but does not show the trait
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