Epigenetics is the study of heritable alterations in gene expression caused by ____
a. mechanisms that do not alter any DNA sequence
b. the mutation of a single gene
c. translocations between alleles
d. environmental factors
e. replication and then improper repair of DNA coding mistakes
a
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The small, non-protein molecules that can be readily separated from an enzyme and are responsible for transfer of atoms from one molecule to another are referred to as
A. vitamins. B. enzymes. C. hormones. D. coenzymes.
What is codon bias? If synonymous substitutions give the same amino acid, why should there be a bias in which codons encode that amino acid?
What will be an ideal response?
Cardiac muscles cells have a sarcolemma that is more permeable to calcium, which causes them to __________
Fill in the blank(s) with the appropriate word(s).
Connective tissue is different from other major tissue types in that it
A) is made of cells. B) has cells that are sparsely scattered through a nonliving matrix. C) covers the surface of the body. D) conducts electrical impulses throughout the body.