Biology 251 - Genetics » Spring 2021 » Topic 3.2 Quiz
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Question #1
A test cross is always performed with one individual possessing the:
A.
homozygous recessive genotype.
B.
heterozygous genotype.
C.
homozygous dominant genotype.
Question #2
The dihybrid cross, involving two loci determining independent characteristics, inheritance in the F2 generation demonstrates:
A.
Mendel's principle of segragation.
B.
Mendel's principle of independent assortment.
Question #3
The dihybrid cross, involving two loci determining independent characteristics, beginning with true-breedingp parents producing F1 progeny that are self-fertilized would produce F2 generation progeny showing a:
A.
3:1 phenotype ratio.
B.
1:1 phenotype ratio.
C.
9:3:3:1 genotype ratio.
D.
9:3:3:1 phenotype ratio.
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