Beginning with Homo habilis, human evolution followed a sure course of increasing brain size relative to body size
a. True
b. False
Indicate whether the statement is true or false
True
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The study of sickle-cell anemia and its relation to malarial environments demonstrates that
A. heterozygotes are not as selectively fit as are dominant homozygotes. B. a maladaptive allele may be preserved if it provides an advantage. C. homozygotes lack the capacity to digest lactose. D. natural selection improves a gene pool by wiping out deleterious alleles. E. selection removes recessive alleles from the gene pool faster than it does dominant alleles.
The arm of a(n) __________ has a full range of motion for locomotion
a. ape b. strepsirhine c. monkey d. vertical clinger and leaper
What are pluralistic societies? Provide an example of one
What will be an ideal response?
Dwarfism is an adaptation commonly found on islands when there __________.
A) is not enough food B) are few predators C) is a very low population density D) are numerous competing species