The melting point is:
A. the temperature at which double-stranded DNA begins to melt.
B. the temperature at which double-stranded DNA is completely melted.
C. the temperature at which double-stranded DNA is too single-stranded to ever renature back to double strands.
D. the temperature at which double-stranded DNA has become 50% single-stranded.
E. the temperature at which double-stranded nucleic acids degrade into free nucleotides.
D
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Evolution by natural selection ________
A) requires that multiple unverified assumptions are made before it can be considered a viable explanation B) is only a theory and therefore not testable C) can be tested experimentally D) can be tested observationally E) Both C and D.
A nucleus within an ascus undergoes meiosis, producing four haploid spores, which then undergo mitosis, producing eight haploid ascospores. These haploid ascospores contain a maximum of _____ different genetic types.
a) one b) two c) three d) four e) five
In the equilibrium theory of island biogeography, variation in numbers of species on islands of different sizes is seen as a function of differences in:
A) immigration rates. B) extinction rates. C) neither of the above.
The polypeptide-making organelles, which consist of protein combined with RNA, are called
A. lysosomes. B. centrosomes. C. ribosomes. D. Golgi bodies. E. mitochondria.