Biology: The Dynamics of Life, California Edition

Section 1: Applied Genetics

Applied Genetics

1.
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If a known test dog is homozygous recessive for a trait dd), and the unknown test dog is homozygous dominant for a trait DD), what percentage of the offspring will be homozygous recessive?
A)100%
B)50%
C)0%
D)25%
2.
Which of these is NOT an example of the effectiveness of selective breeding?
A)selecting the smallest, least-juiciest berries
B)more milk production in cows
C)stronger offspring plants than the parent plants
D)choosing eggs from the best egg-laying hen for hatching
3.
What is a hybrid plant?
A)a cross between an individual of unknown genotype with an individual of a known genotype
B)the offspring of parents that have different forms of a trait
C)the process of selecting seeds from the largest of a cultivar of plants
D)offspring that are heterozygous
4.
What is a cultivar?
A)guinea pigs with black hair represented by the dominant B allele
B)cows that produce three times more milk than they did 50 years ago
C)two closely related species of plants
D)the offspring of parents who each exhibit different forms of a trait
5.
__________ occurs when two closely related individuals mate.
A)Inbreeding
B)Test crossing
C)Cloning
D)Cultivars
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