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Genetics
NA
18
Biology
10th Grade
05/05/2009

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Term
Genetics
Definition
the field of biology that focuses on how characteristics are transmitted from parents to offspring
Term
Dominant
Definition
referring to a factor that masks another factor for the same trait
Term
Recessive
Definition
referring to a factor that is masked by another factor for the same trait
Term
Law of Segregation
Definition
the segregation, or separation, of two factor for the same trait when a gemete forms
Term
Law of Independent Assortment
Definition
the independent segregation of the factors that control different traits
Term
Allele
Definition
an alternative form of a gene
Term
Punnette Square
Definition
a way to show the possible outcomes of a genetic cross
Term
Phenotype
Definition
the expression of a genotype of an organism
Term
Genotype
Definition
the genetic make-up of an organism
Term
Homozygous
Definition
the condition where both alleles of a pair are alike
Term
heterozygous
Definition
the condition where both allleles of a pair are different
Term
Monohybrid Cross
Definition
a cross between individuals that involves one trait
Term
Dihybrid Cross
Definition
a cross between individuals that involves two traits
Term
Incomplete Dominance
Definition
a situation where two or more alleles influence the phenotype, which is in between that of the parents
Term
Codominance
Definition
a situation where both alleles for a gene are expressed in a heterozygous individual
Term
Sex Chromosomes
Definition
a chromosome that carries the genes that determines an individual's sex
Term
X-linked Trait
Definition
a trait whose alleles are located only on the X chromosome
Term
Pedigree
Definition
a family history that shows individuals who display a particular trait and those who do not display the trait
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