Biology, 30.03.2020 21:09 clickbaitdxl
The coelacanth is a kind of fish that has existed for 400 million years.
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Image by Aberto Pemandez Femandez. 2007
Reproduced under the terms of the GNU Free Documentation License Version
The modern day coelacanth is almost identical to its Paleozoic ancestors. How has the evolution of this species most likely
progressed?
A. It has experienced long periods of stasis in which little change has occurred.
B. It has evolved convergently to fill a specific niche in its ecosystem.
C.
It has changed gradually over time into a completely different species.
D. It has experienced gene flow from a separate population which has drastically changed its genetic make-up.
changed its genetic maken
Answers: 3
Biology, 22.06.2019 02:50, mccay5016987
Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?
Answers: 1
Biology, 22.06.2019 05:20, denisefaircloth73
Match the description of each organism to the appropriate category
Answers: 2
The coelacanth is a kind of fish that has existed for 400 million years.
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Image by Aber...
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Image by Aber...
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