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Unit 3
Genetics.
17
Biology
10th Grade
05/04/2009

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Term
Genetics
Definition
the field of biology that focuses on how characteristic are transmitted from parents to offspring.
Term
Dominant
Definition
Referring to 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 seperation, of two factors for the factors for the same trait when a gamete 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
Punnett square
Definition
a way to show the possible outcomes of a genetics.
Term
Phenotype
Definition
the expression of the genotype of an organism
Term
Genotype
Definition
the genetic makeup of an organism .
Term
Homozygous
Definition
the condition where both alleles of a pair are alike.
Term
Heterozygous
Definition
the condition where both alleles of a pair are different.
Term
Monohybrid
Definition
a cross between individual that involves one trait
Term
Dihybrid cross
Definition
a cross between with two traits
Term
incomplete dominance
Definition
where two or more alleles influence the phenotype.
Term
codominance
Definition
both alleles for heterozygous
Term
sex chromosome
Definition
carries the genes
Term
X
Definition
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