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Heredity
Mendelian Genetics
13
Science
7th Grade
11/15/2007

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Term
Heredity
Definition
passing of traits from parent to offspring
Term
allele
Definition
different forms a gene may have for a trait
Term
genetics
Definition
study of how traits are inheretid
Term
Mendel
Definition
father of genetics
Term
dominant
Definition
form of trait that masks or covers up another form of that trait
Term
recessive
Definition
form of trait that is covered up by another form of that trait
Term

homozygous

Definition

having two of the same alleles for a trait

(TT or tt)

Term
heterozygous
Definition

having two different alleles for a trait

(Tt)

Term
phenotype
Definition

physical trait that is shown

(brown eyes)

Term
genotype
Definition

genetic makeup for an organism

(TT,Tt,tt)

(this is not visible)

Term
incomplete dominance
Definition

producing a phenotype that is a mixture of two homozygous parents

(Red + White = Pink)

Term
multiple alleles
Definition

having more than two alleles that control a trait

(blood type is an example A,B,O)

Term
Polygenic inheritance
Definition

group of gene pairs that act together to produce a single trait

(eye color is produced from many genes)

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