HS.Bio.11 Complex Inheritance (Pedigrees)

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8 Terms

1

Incomplete Dominance

when both alleles are expressed in a way that there is a "blend" of traits

2

Multiple Allele

a gene with more than 2 alleles. i.e. A, B, O blood types

3

Polygenic Trait

traits controlled by two or more genes. i.e. skin color; height

4

Codominance

where two different alleles are express. Both are equally dominant and therefore both are expressed.

5

Sex-Linked Gene

a gene located on a sex chromosome

6

X-Linked Gene

a gene located on the X Chromosome

7

Y-Linked Gene

a gene located on the Y Chromosome

8

Pedigree

a chart showing genetic relationship of generations