The DNA, mRNA and tRNA are the essential nucleic acids that initiate protein synthesis. The DNA contains the genetic code of our human body in the form of chromosomes. It is composed of nucleic acids like uracil (U), guanine (G), adenine (A) and cytosine (C). The messenger RNA or mRNA carries this code called codons expressed in three-letter codes. Each amino acid has its own assignment of code. The mRNA carries this code to the ribosome which is the site for protein synthesis. The translational RNA or tRNA contains anti-codons to translate the codes in the mRNA into amino acids that link together to form proteins.
Geographical Isolation is the mechanism that might have led to the appearance of the Hawaiian honeycreeper.
Geographical Isolation is the term used that refers to a population of animals, plants, or other organisms that are separated and unable to exchange genetic materials with other organism of the same species.
Geographical Isolation may be a result of coincidence or accident.
Here are some factors of Geographical Isolation:
1) Isolation by barriers
2) Isolation by distance
3) Isolation after an Event
4) Isolation by separation
The myelin sheath is consist of a cell called the glial
cell. The glial cell is the one responsible for providing assistance in neurons
as well as insulation of which will be in between of them. This type of cell is
usually seen in the CNS and it has different types.
All cells share four common components:<span>a plasma membrane: an outer covering that separates the cell's interior from its surrounding environment.cytoplasm: a jelly-like cytosol within the cell in which other cellular components are found.DNA: the genetic material of the cell.<span>ribosomes: where protein synthesis occurs.</span></span>
