H type of bone tissue forms the superficial layer of all bones?
Compact
Spongy
Red bone marrow
Yellow bone marrow
A. Compact
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Distinguish between a circadian clock and circadian rhythm
What will be an ideal response?
The heritability of autism is ________ percent.
A) 10 B) 25 C) 55 D) 90
For statements 117–121 select the best choice of the four
evolutionary processes listed below. a. mutation b. gene flow c. genetic drift d. natural selection M 117. This is most likely to lead to the loss of genetic variation in a small population. E 118. This process produces new genetic variation within a species. M 119. This process can rapidly offset the effects of genetic isolation when two populations come into secondary contact. M 120. The reduced contribution of one phenotype in comparison to another to the next generation is an example of this. M 121. The occurrence of mimicry is best explained as the ultimate result of this process.
Ribozymes are
A. catalysts for DNA splicing. B. ribosomes which catalyze reactions. C. catalysts for RNA editing. D. unique to prokaryotes. E. unique to eukaryotes.