The process of gene duplication and divergence refers to (select all that apply):
A. creating new genes via mutation in
duplicates of old genes.
B. the creation of gene families, which are
genes that are similar across a range of
organisms.
C. offspring becoming increasingly different
from their ancestors.
D. the creation of new species as new genes
are created from duplicates of old genes.
E. None of the answer options are correct.
A,B
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All of the following nucleotide bases are pyrimidines EXCEPT
A. adenine. B. thymine. C. cytosine. D. uracil. E. cytosine and thymine.
Activators
A. are involved in negative control. B. are involved in positive control. C. always bind to the promoter. D. are allosteric proteins. E. are involved in positive control AND are allosteric proteins.
In Drosophila melanogaster (2n = 8), a fly with seven chromosomes could be called a haplo-IV
Indicate whether the statement is true or false
Turbidity of a liquid culture used as a proxy for cell number is most powerful when combined with a carefully constructed
a. diffraction coefficient rate. b. growth curve relating OD to cell number. c. OD versus time graph. d. growth yield curve.