The frequency of allele is illustrated as the ratio of that specific allele in the population. As one knows that as the humans are diploid, so the total number of alleles is double of the total number of people in the population.
In order to determne the allele frequencies for A and B, there is a need to know that the persons with type A blood are homozygous AA, the persons with type AB blood are heterozygous AB, and the persons with type B blood are homozygous BB.
The frequency of A is:
2*(number of AA) + (number of AB) divided by 2 * (total number of individuals)
Therefore,
{2 * (200) + (75)} / 2 (200 +75 +25)
This comes out to be 475/600 = 0.792. Thus, p = 0.792.
Since, q is 1 - p
Then, q = 1 - 0.792 i.e 0.208.
Scientist usually use the process of relative dating to begin with, then chemical dating. They look at where the environment that they found the fossil to determine if it has always been that environment. ie i found fossils of marine life in a country town suggesting that the environment was previously a marine environment.
They study the rocks that we found the fossils to help determine a relative age. ie this came before that, but after them to give us an approximate age. they then study the fossil itself to classify it into groups to determine which branch of evolution it has come from.
<span>Fossils can be found in rocks, bedding planes,(rock layers), trees (tree ring dating). mostly there are found in rocks or weathered rocks (sands, mud).</span>
Answer is option b. The diaphragm separates these two cavities
Most finches' beaks are way too broad or short to collect flower nectar, 'cause on the other hand, hummingbirds' beaks are long and narrow.
Answer: A . Has its collagen fibers randomly orientated.
Explanation:
In the microscopic anatomy of the bone, an osteon (basic microscope unit of the bone) can be arranged into two categories; woven bone or lamellar bone.
As the name suggests woven bone is characterized by the random orientation of the collagen fibers . These collagen fibers haphazardly form to give the visual appearance of an intertwined (woven) network of collagen fibers.
Due to the randomness of the collagen fibers orientation woven bone is thus mechanically weaker than lamellar bone. Woven bone is formed/produced when osteoblasts produce osteoids rapidly within the bone matrix thus woven bone has the ability to form quickly as needed.
Woven bone is thus immature bone or pathologic bone with no stress orientation, it has a high percentage of osteocytes per unit volume and a high rate of turnover.