Biology Chapter 11A Matching Test 2
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15 Terms
Law of Segregation
Homologous chromosomes separate during meiosis
Law of Segregation
Each gamete contains one member of each homologus pair
Law of Independent Assortment
Traits segregate independently
Law of Independent Assortment
The inheritance of a particular trait is not dependent on the inheritance of any other particular trait
Law of Dominance
Some alleles can hide or mask the presence of other alleles for the same trait
Pedigree
a.k.a. family tree of genes/traits
Pedigree
A chart that shows how a trait and the genes that control it are inherited w/in a family
Carrier
An individual who carries a recessive trait that is NOT expressed in that individual
Incomplete dominance
When the two alleles for a trait do not exhibit a true dominant/recessive relationship
Incomplete dominance
The heterozygote shows a phenotype that is "in between" the phenotype of the two homozygous parents
Incomplete dominance
Both alleles are partially expressed in the heterotype
Codominance
Both alleles in the heterozygote express themselves fully
Multiple Alleles
A gene which has three or more alleles that exist in a population
Polygenic traits
A trait that is controlled by 2 or more genes
Polygenic traits
Show a wide range of phenotypes