People who can taste PTC have been shown to be more likely than non-tasters to dislike broccoli and
Brussels sprouts. Indicate whether the statement is true or false.
T
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Which mutant gene is responsible for resistance to HIV in some humans?
A. CCR5 B. HIV-1 group O C. HIV-group M D. SIV
Pandas have what appears to be a sixth digit on each of their forepaws. Some refer to this as the panda's "thumb." Actually, this thumb is really just a modified wrist bone (sesamoid bone)
Pandas use their thumb much like humans use their thumbâ€"to better hold objects. For the panda, they hold onto stalks of bamboo and are able to strip the leaves off the stalk so that they may eat the leaves. t or f: The pandas "thumb" is the result of natural selection. t or f: It was in the pandas best interest to choose this adaptation so they could forage more efficiently and increase their fitness. t or f: It was in the male pandas best interest to choose this adaptation so they could forage more efficiently and increase their fitness. What will be an ideal response?
Watson and Crick developed a model of DNA in which the two strands twist into the shape of a ________.
A. double helix B. circle C. double pleated sheet D. helix
The integration of phage DNA into the bacterial chromosome occurs because of
A. the phage's ability to synthesize an enzyme that integrates its DNA into the host's chromosome. B. the phage's ability to synthesize enzymes to enter the bacterium. C. similar RNA nucleotides in both. D. the similarity in enzyme metabolism. E. the phage's ability to synthesize enzymes to enter the bacterium AND similar RNA nucleotides in both.