What is a chromosomal domain as defined by DNase sensitivity?
What will be an ideal response?
Ans: In this context, a chromosomal domain is a region that is sensitive to DNase digestion. The interpretation is that the chromatin structure in this region has been altered to allow transcription, so the domain contains at least one actively transcribed gene.
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Gregor Mendel was most influential in which field of biology?
A) genetics B) chromatography C) biochemistry D) bacterial transformation E) cytology
__________ is rapid diversification into new species
that occupy novel niches. Fill in the blank(s) with the appropriate word(s).
Four of the five structures listed below are sites
where cartilage is found. Select the exception. a. embryonic skeleton b. vertebral discs c. external ear d. end of long bones in skeleton e. skin
In a particular DNA sequence, nonsynonymous substitutions occurring at a lower rate than synonymous substitutions would be evidence for
a. neutral evolution. b. negative selection. c. genetic hitchhiking. d. positive selection. e. mutational bias.