The toxic condition characterized by retention of
nitrogenous substances in the blood is called uremia. Uremia is a toxic condition caused by
retention in the blood of nitrogenous waste products normally excreted in the
urine. Acute renal failure denotes a
sudden onset of renal failure, such as that caused by an accident, certain
drugs or poison. The kidneys may recover or the damage may be permanent. If the
kidneys stop functioning this condition is what they called uremia, therefore
the body is full of extra water and
waste products, leading to swelling in the hands or feet, fatigue and weakness.
End-stage renal disease refers to when the kidneys have lost all or nearly all
function.
An unknown mtDNA sample sample is matched to a sample of mtDNA that was found at the crime scene.<span> This is how mitochondrial DNA (mtDNA) typing is used in forensic science.</span>
<span>Unlike nuclear DNA typing, mtDNA isolation is quite easy because its number is quite large. mtDNA copies rang from 100 to 10,000 per cell. It is also more stable and stronger than the nuclear DNA; that is why even unsolved cases from years ago use mtDNA typing as reference for possible conclusion.</span>
A) A textbook definition would be that genetic drift is: a random change in allele frequency caused by a series of chance occurences that cause an allele to become more or less common in a population. In layman's terms, this means that genetic drift happens when luck makes the genetic pool of the population to deviate from what is expected.
B) The cause for this genetic drift is the aformentioned couple. Because amish communities are small and they select partners from their community, having even a couple of carriers of alleles in a community can make the allele freuency much larger than expected; for example, if the community was 100 persons, the percentage would be in the order of 1%, still much larger than the general population. Thus, the cause here is that a small population had a couple of carriers.
C) Sexual reproduction leads to a mixing of alleles from both mother and father and helps diversity. When a population is isolated, the gene pool is fixed and no new genes can come in, reducing diversity. Also some people that have an allele might die, hitting diversity even more. Finally, having a small population creates a strong pressure in some circumstances that leads to elimination of some traits and diversity.
Answer: Good examples of local winds are sea breezes and land breezes, and mountain and valley breezes. Local winds cover very short distances. Global winds are really large air masses that are created mainly as a result of the earth's rotation, the shape of the earth and the sun's heating power.