How are the algae economically important?
A. They increase environmental calcium levels.
B. They decrease the population of harmful fungi.
C. They provide fiber in most diets.
D. They provide food additives.
D. They provide food additives.
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A recent study compared the Homo sapiens genome with that of Neanderthals. The results of the study indicated that there was a mixing of the two genomes at some period in evolutionary history
Additional data consistent with this hypothesis could be the discovery of _____. A) some Neanderthal sequences not found in living humans B) a few modern H. sapiens with some Neanderthal sequences C) duplications of several Neanderthal genes on a Neanderthal chromosome D) some Neanderthal chromosomes that are shorter than their counterparts in living humans
The key point in Darwin's proposal is that the ___________ imposes the conditions that determine the direction of selection.
A. gene B. environment C. parent D. individual
Describe the major changes in the embryo during the first trimester
What will be an ideal response?
If we place a given trait on a phylogenetic tree that we have already constructed using other data, we can:
a. generate a hypothesis about when and how this trait evolved. b. generate a hypothesis about the evolutionary history of the species in which those traits ap-pear. c. Neither of the above. d. Both of the above.