The type of repetitive DNA composed of sequences of large repeated units is often associated with
A) tandem repeats.
B) transposable elements.
C) sex-linked genes.
D) transcription factors.
Answer: B
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A drug researcher has developed a macromolecule that can bind to scrapie and thus change the prions conformation. What effect might this have on the actions of scrapie?
A. The shape change could prevent the scrapie protein from converting normal proteins to scrapie proteins B. The shape change could induce scrapie protease activity C. The shape change could stop the transcription of scrapie RNA D. The shape change could stop the replication of scrapie DNA E. The shape change could block the translation of scrapie RNA
____________________ are evidence of life in the distant past.
Fill in the blank(s) with the appropriate word(s).
Explain why phocids, especially ones living in polar areas, generally have very short lactation periods compared to eared seals
What will be an ideal response?
Daphnia water fleas have evolved to have both sexual and asexual reproduction. Asexual reproduction is favored when the biology and chemistry of the lake is most likely to change across generations, while sexual reproduction is favored when conditions are most stable across generations.
a. true b. false