Answer:
Answer is A. Cdk7 of the CAK (TFIIH component) phosphorylates Cyclin 8 of the Mediator to down regulate promoter activity.
Refer below.
Explanation:
Cdk7 of the CAK (TFIIH component) phosphorylates Cyclin 8 of the Mediator to down regulate promoter activity is a FALSE STATEMENT.
Answer:
The correct answer is option b. "Guppy color patterns would change; guppies would produce fewer but larger offspring; the nitrogen excretion rate would increase and the rate of growth of primary producers such as algae would increase".
Explanation:
The Trinidadian guppy is a species of fish with the scientific name <em>Poecilia reticulata</em>. Just like almost all species, its population is regulated for multiple factors, one of them being the presence of predators. The removal of Trinidadian guppy predators would result in multiple consequences:
- Guppy color patterns would change. The fish have a complex coloration determined largely by predation avoidance.
- Guppies would produce fewer but larger offspring. This adaptation has been proved in an experiment at which the fish was introduced one a low predation environment. The report proved that evolution can take place in less than 10 years.
- The nitrogen excretion rate would increase. It has been reported that predation reduce Trinidadian guppy nitrogen excretion by 40%. Removing the predators will case the nitrogen excretion rate to increase due to an increase in the fish food intake.
- The rate of growth of primary producers such as algae would increase. This is an effect of the increase of nitrogen excretion rate, which benefits algae population to growth.
This supports the continental drift idea by example: a fossil animal was in one continent and then you find it in another. This is splitting the continents.
Midnight Sun, a name given the sun when it can be seen at midnight during the Arctic or Antarctic summer.The midnight sun occurs because the earth's axis tilts toward the sun in summer and away from the sun in winter. Thus the poles are exposed to the sun's rays for six months each. As our planet makes its annual circuit around the sun, parts of the globe experience dramatic seasonal swings thanks to the tilt of Earth’s axis. Between April and September, the northern hemisphere is tipped toward the sun, resulting in longer days and warmer weather. Destinations near and north of the Arctic Circle experience the astronomical phenomenon.
I believe the first part is conduction. I'm sorry I can't help with the rest.
