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The probability of tossing a coin and having it be heads or tails is


A) 1/4.
B) 1/2.
C) 1.
D) 0.
E) 2.

F) A) and B)
G) A) and C)

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Unattached earlobes are a dominant trait in humans.Which phenotype is most likely for an individual with the genotype EE?


A) both earlobes are unattached
B) both earlobes are attached
C) the right earlobe is attached and the left earlobe is unattached
D) the right earlobe is unattached and the left earlobe is attached
E) both earlobes are extremely elongated

F) B) and D)
G) D) and E)

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Which variable has the stronger influence on the color of an individuals skin?


A) the individuals phenotype
B) the amount of time spent in the sun
C) the amount of time spent in the sun and the individuals genotype
D) the individuals genotype
E) neither the sun nor the individuals genotype have any influence on the individuals skin color

F) B) and C)
G) A) and C)

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