Biology: Sex chromosomes/inherited
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determines whether the offsprings are male or female.
sex linkage genes
X-linked and Y-linked genes together
expressed in the presenece of sex hormones and are only observed in one sex or the other.
sex influenced traits
expressed in both sexes, but are expressed differently.
variation of a particular inherited character
study of heredity
2 types of Intermediate inheritance
- -Incomplete Dominance
Both alleles are partially expressed.
Shows a phenotype that is a mixture of both parents. Both alleles are shown.
example: roan cows.
example: height, eye color, skin color, weight.
how are eye colors determined by 3 genes?
- gene 1: TONE of pigment
- gene 2: AMOUNT of pigment
- gene 3: POSITION of the pigment
- 1 gene
- affecting multiple traits
example: sickle cell disease
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