The notion of orthogenesis is no longer supported because we now know that evolution proceeds as an ongoing
process of dynamic adjustment, not toward any fixed goal.
a. True
b. False
ANSWER: True
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The basilar membrane has varying flexibility. Activation of different regions of the basilar membrane enable perception of sounds of different:
A. pitch B. amplitude C. intensity D. loudness
What human organ is formed from two genetically-different tissues?
A. neural crest B. neural tube C. placenta D. uterus
is simple diffusion carrier or non carrier mediated
What will be an ideal response?
It has been proposed that large brains evolved in Homo species because
A) large brains allowed better visual acuity, which was favored by natural selection. B) large-brained individuals were better able to outwit and escape predators. C) natural selection favored large-brained individuals because they were better in social interactions. D) genetic drift increased the frequency of large-brained alleles. E) evolution of a large brain was a consequence of evolution of overall larger body size.