1. The rediscovery of Mendelian inheritance caused increased scrutiny of Darwin’
ID: 68067 • Letter: 1
Question
1. The rediscovery of Mendelian inheritance caused increased scrutiny of Darwin’s theory of natural selection because of an apparent conflict in the two concepts. This conflict was based on the observation that Darwin focused on continuous traits, while Mendelian genetics deals with:
discrete characters.
alleles.
flowers.
genotypes.
All of the above.
2. In artificial selection on domestic animals, results often exceed the range of variation in an original population. For instance, the average number of eggs laid by hens or the amount of milk produced by cows may be higher than the highest values in an ancestral population from which these animals were selected. Choose the best explanation for this phenomenon.
Artificial selectio can shift the phenotypes in a population beyond the range in the original population
The original populations contain much of the latent variation
Both a and b are correct
Selection can sort on preexisting variation to shift the distribution of phenotypes, but they will stay within their current range.
a.discrete characters.
b.alleles.
c.flowers.
d.genotypes.
e.All of the above.
Explanation / Answer
1: E
2: A
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