As a result of studying lactose intolerance in people from different geographic regions, scientists were able to determine that _________.
A. there is no evolutionary significance to their study
B. mutations have nothing to do with evolution
C. there is only one possible mutation that will affect lactose intolerance
D. natural selection could favor anyone with a mutation for a permanently active lactase gene
D. natural selection could favor anyone with a mutation for a permanently active lactase gene
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An individual with the Huntington's allele will always pass the allele on to their children
a. True b. False
To interpret microarray data, it is necessary to understand the significance of the color of each dot within the array
a. True b. False
Imagine that you have set up a genetic screen to identify E. coli mutants that cannot metabolize the amino acid tryptophan for energy. Beginning with a master plate containing many colonies, you prepare replica plates on medium with glucose or tryptophan as the only energy source. You would look for colonies that _____.
A) cannot grow on either type of media
B) can grow on both types of media
C) can grow only on the plates with tryptophan
D) can grow only on the plates with glucose
Which of the following plants would have a seed?
a) angiosperm b) gymnosperm c) nonvascular plant d) both gymnosperm and angiosperm