nonconstancy of species
This is exhibited by the finches species of the Galapagos islands. While the finches belong to one species, they had phenotypic variations in beak sizes. Some had long narrow beaks while other had short stout beaks with variation in between. This increases the allele (genetic variation) in a gene pool.
branching evolution
The hip bone in whales which is homologous to that of humans depicts branching evolution. This exhibits that both species shared a common ancestor before they branched into different species. The hip in the whale has become vestigial while in humans it is prominent due to its purpose in the human gait and locomotion.
<span>occurrence of gradual changes in species</span>
Older fossils of a species best depict gradual change. This is when they are compared to those of current fossils of the same species. These fossils have displayed gradual differences in their structure and shapes. This is evident in the fossil of humans species that has shown gradual differences in structures such as the size and shape of the skull.
natural selection as the mechanism for evolution
When the predators such as lions during their hunting have preferences for fat prey (antelopes) since they are slower and provide more meat, this is natural selection forces at work on the prey population. The population of the fat and slow antelope will reduce because of being fed on more than the others. Therefore the subsequent generation of the antelope population will weed out fat antelopes.
The bonds that hold the two chains of an insulin molecule together are two disulfide bonds.
Insulin molecule is made up of two peptide chains. These chains are referred to as the A and B chains. The A and B chains are help together by the two disulfide bonds present between them. The A chain has an additional disulfide bond inside it. The A chain is 21 amino acids long and the B chain is 30 amino acids long in most of the species.
<span>During
the 1960's, UC Berkley is considered to be an ideal school for young adults and
Jenny has high regard with these issue for most of these young students came from the
neighborhood in nearby San Francisco that was a hotbed of protest and civil
unrest. </span>
Perlemoen is reasonably
easy to take available of the ocean and do not really required huge and
expensive equipment. The poachers take out millions of rands worth of Perlemoen
with relatively simple and cheap equipment such as wet suites, googles and
flippers. The most expensive equipment they use are their boats and vehicles. In
comparison with the lucrative industry the costs of poaching are low. Perlemoen
are often the smaller, younger abalone of the species that are taken because
they are quite simply and easier to harvest.
1.
The younger perlemoen are found closer to the
shoreline and often bunched together and they can get a whole whack of them at
one spot.
2.
The strandlopers harvested the perlemoen from
the rocks during low tide without the need for diving.
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B organelles
Like the mitochondria
