Under natural conditions without modern medicine, which of the following conditions has the LEAST impact on fitness?
A) Alzheimer disease, a neurological disorder that generally afflicts individuals over the age of 65
B) valvular stenosis, a birth defect resulting in a narrow valve that restricts blood flow from the heart
C) amenorrhea, the inability to menstruate
D) Tay-Sachs, a congenital (from the time of birth) disorder in which neurons degenerate
Correct Answer:
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Q46: Forty-nine percent of a population is homozygous
Q47: Evolution is the result of
A) the inheritance
Q48: The fittest organism in a population is
Q49: The theory of natural selection was proposed
A)
Q50: New genes are introduced into a gene
Q52: _ make up a genetically distinct population.
A)
Q53: All of the _ are a species.
A)
Q54: A _ indicates that evolution is occurring.
A)
Q55: Which of the following would be an
Q56: Which of the following would be necessary
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