The initial skeleton of all vertebrate embryos is made

of
a. cartilage.
b. collagen.
c. compact bone.
d. spongy bone.
e. fibrous proteins.


Answer: a

Biology & Microbiology

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What best describes all of the alleles for all the loci present in a population?

a. gene pool b. allele collection c. population variation d. evolutionary potential e. population compilation

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In a wild-type strain of fruit flies, the length of a gene from the start to the stop codon is 2,000 DNA bases. Suppose an experiment indicated that the mRNA molecule transcribed from this gene is much shorter (only 1,200 bases)

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The energy needed to destabilize existing chemical bonds and start a chemical reaction is called

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