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.
As high cholesterol diets become more common, individuals with the APOE-42 allele will have a better survival rate, so the allele will increase in frequency.
<h3>What is natural selection?</h3>
Natural selection is the main evolutionary force by which evolution (change) occurs over time.
An adaptive allele is a given gene variant that confers an evolutionary advantage to the individual.
In this case, the APOE-42 allele confers an evolutionary advantage and therefore it will increase its frequency in the population.
Learn more about the natural selection here:
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<span>Answer: 1%</span>
<span>As per excerpts, Water covers 75 percent of Earth and 97 percent of water on Earth is salt water, meaning only 3 percent of water is available as fresh water. Based on this information, 3% of 75% of the water on earth is available as fresh water or 2.25%. Since most of the water is said to be locked up in solid glaciers and polar ice caps, the amount of water on the planet that is available for animals to drink is lesser than 2.25% so the best approximation is 1 percent.</span>
Answer:
Movement is the process which is not the characteristic of all living things.
Explanation:
All living things are characterized by the following characters like reproduction and respiration etc. So all those living things which are capable of reproducing and giving rise to new organisms are living things. Movement and self production of food property ( photosynthesis) are such characters which are not the characters of all living things. Living thins such as animals are characterize as motile because they can move and change their position and plants are characterized as non motile because they can not change their position.
The theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle of the earth.