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The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. In this cross, tallness (H) is dominant to shortness (h).Based on the Punnett square, what is the phenotype of the offspring?

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A
Hh
B
HH
C
tall
D
short
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A scientist wants to examine a genetic disease in humans. The scientist hypothesizes that the disease can be treated by using gene therapy. Humans take a long time to reproduce and develop, so the scientist will have to

A
give up on testing the hypothesis.
B
test the hypothesis for a very long time.
C
develop new methods to test the hypothesis.
D
find a way to make humans reproduce faster.
23

Which inheritance pattern results when parents with pure traits are crossed and the resulting offspring have traits that appear to be a blend of the parents' traits?

A
incomplete dominance
B
codominance
C
Mendelian inheritance
D
polygenic inheritance
24

Why did Gregor Mendel use peas in his experiments?

A
Peas grow very slowly.
B
Pea reproduction cannot be controlled.
C
Peas normally produce very few offspring.
D
Peas have characteristics that have two forms.
25

Which is the best example of a hypothesis leading to new experimental methods?

A
Gregor Mendel influenced the development of the theory that everything is made of cells.
B
Gregor Mendel continued the genetic research of Thomas Hunt Morgan, but Mendel used pea plants.
C
Thomas Hunt Morgan continued the genetic research of Gregor Mendel, but Morgan used fruit flies.
D
The theory that everything is made of cells influenced Gregor Mendel in his research.

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