The helical shape of the DNA contains major and minor grooves, which assist in the regulating of gene expression
Indicate whether the statement is true or false
TRUE
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The best term for the process by which some exons are included in a mature mRNA from one cell but are absent from the mRNA in another cell is
A. RNA interference. B. chromosomal remodeling. C. alternative splicing D. Pre-mRNA splicing.
Cnidarians that exhibit only the polyp stage in their life cycle are:
a. hydrozoans. b. scyphozoans. c. cubozoans. d. anthozoans. e. bryozoans.
The structures labeled 2 in Figure 43-2 are the:
a. ampullae.
b. cochleae.
c. utricles.
d. semicircular canals.
e. bony labyrinth
Short hair (L) is dominant to long hair (l). IS a short-haired animal of unknown genotype is crossed with a long-haired animal and they produce one long-haired and one short-haired offspring, the results would indicate that
a) the short-haired animal was homozygous. b) the long-haired animal was heterozygous. c) the short-haired animal was heterozygous. d) both the long-haired and short-haired animals were heterozygous.