If an assumption for the Hardy-Weinberg equation is violated, what does this mean?
A. This means the allele frequencies or
genotype frequencies are undergoing
evolutionary change.
B. This means that the population is adapted
to its environment.
C. This means that mutations are increasing
in frequency in the population.
D. This means an allele is fixed in the
population.
A
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Which one of the following statements about the human impact on Earth's ecology is correct?
A. Agriculture has increased abundance and distribution of some species, while decreasing abundance and distribution of other species. B. Humans commandeer as much as 25% of all photosynthetic production on land. C. More atmospheric nitrogen is converted to ammonia by humans than by the rest of nature. D. Human activities produce more carbon dioxide than do volcanoes. E. All of these statements about the human impact on Earth's ecology are correct.
In a cell with a diploid number of 12, how many chromatids are present at prophase of mitosis?
A) 6 B) 12 C) 24 D) 48 E) none of the above
The effect of each dominant allele of a complex trait is ____________________ and _______________
Fill in the blank(s) with correct word
A random change in allele frequencies over time due to chance is termed "________"
a. natural selection b. a bottleneck c. genetic drift d. gene flow