Answer:
D) sympatric speciation and habitat isolation
Explanation:
Sympatric isolation is a form of evolutionary process whereby different species from an ancestral origin evolve within the same geographical environment as a result of reproductive isolation.
Habitat isolation is a form of reproductive isolation which occurs when two populations of a species inhabiting overlapping habitats become unable to interbreed with each other.
Reproductive isolation (habitat isolation) that occurs in the fleas is as a result of the new species becoming separate from it's ancestral species which feed only on pronghorn antelopes, although both species can still be found in the same geographical location (rangeland). The new species now have preference for cattle blood, and so are now found on cattle.
In the situation of the two new species of flea that would evolve, it can be said to an example of sympatric speciation and habitat isolation, since the host mammal is assumed to be their habitat and both the cattle and pronghorns often associate with one another in the same open rangeland.
To cool down what ever's ging through this piroid, so that an engine doesn't over heat
They would die more quicker than a regular plant
I’m mostly using my intuition here, but based on prior knowledge, (iii) would go with B.
This is because it is commonly known that neurons have long stoma (cell bodies) that help them connect with other neurons, as well as bushy ends, called dendrites, that connects the neurons with others. You can see that clearly in B.
Secondly, ii fits with A. Skin cells are lost constantly, as is well known, and the skin itself is comprised of a multitude of layers of skin cells. This means that skin cells are thin. In the picture A, there are thin structures that seem to be flaking off of a surface.
Thirdly, iv goes with D. The inner walls of intestines are lined with long, thin and microscopic structures called villi, which have the function of increasing surface area for absorption of nutrients. The picture shows, indeed, long, thin structures protruding from somewhere, which is an intestine.
Therefore, through process of elimination, i matches with C. I’m not that well versed with cells from the immune system. I’m guessing they’re white blood cells? I’m not sure.
Answer:
The correct answer is - A and D.
Explanation:
Genetic imprinting is DNA modifications that result in changing the expression but not the sequence. Factors That affect such changes present both within and outside the cell.
It is a result of the silencing of either maternal or paternal alleles in a pair. This occurs random and leads to phenomenon like X-inactivation. The mechanism involves methylation of the DNA to be silenced. paternal copy of UBE3A is silenced in neurons.