Splicing of mRNA removes which of the following?
a. promoter
b. nucleotide cap
c. introns
d. transcript
e. exons
ANSWER: c
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Members of this lineage of flatworms are free-living and are found mostly in marine environments
Most acquire food with a muscular pharynx and are hermaphroditic.
a. Trematoda b. Turbellaria c. Polychaeta d. Cestoda e. Hirudinea
What was the energy source in the Miller-Urey simulation of conditions on the early Earth?
What will be an ideal response?
A stamen is
a. composed of a stigma, a style, and an ovary. b. the mature male gametophyte. c. the site where microspores are produced. d. part of the vegetative phase of an angiosperm. e. none of these.
In some populations, we can expect that inbred individuals will have ____ in the population than those not inbred
a. more random mating b. lower levels of surviving offspring c. more changes in allele frequencies d. more heterozygosity e. fewer opportunities to mate