The cell needs to carry out transcription before it can begin translation because transcription is the first step of gene expression, whereby the segments of DNA is copied into RNA in other words mRNA by enzymes RNA polymerase.
Both RNA and DNA are nucleic acids and they use base pairs of nucleotides as complementary language. It is during transcription when DNA sequence is read by an RNA polymerase which produces antiparallel RNA, complementary strand called primary transcript.
Transcription unit is the stretch of DNA which is transcribed into an RNA molecule and it encodes a protein then the transcription produces messenger RNA or mRNA the mRNA serves as a template for synthesis of proteins through the process of translation.
The transcribed gene may encode for either ribosomal RNA or rRNA, non-coding RNA for example microRNA. RNA performs a fundamental role in functions within a cell whereby it helps to regulate, synthesize, and process proteins.<span>
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1) Mutations are caused by changes in nucleotide bases. these altered base formed different amino acid depending upon nucleotide base sequence that code specific amino acid. ... even though some mutations, can have a more effect on amino acid coding, which can affect what kind of proteins are produced.
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1.) Light energy (the electromagnetic radiation of visible light, like colors are a form of light energy), heat energy (energy transfer through kinetic energy that results in what we perceive as heat), mechanical energy (energy created through the power of an object during a certain position or motion- the swinging of a wrecking ball, for example, provides the wrecking ball with enough mechanical energy to break through a wall), electrical energy (energy carried by active electrons within an electrical conductor, like a phone charger), and chemical energy (energy that is released during a chemical reaction, for example, sticking mentos in a bottle of coke creates enough chemical energy to cause the soda to overflow/explode).
2.) Sunlight (solar energy), wood, oxygen, wind, and fresh water.
3.) Petroleum, coal, natural gas (the kind found in the Earth ), and nuclear power.
4.) Fossil fuels (like petroleum, coal, and natural gas-- nonrenewable).
5.) Around 83.5%
Hope this helps!
Explanation:
☆ Large population size
☆ No immigration / emigration
☆ No mutations arising
☆ No natural selection
Hope this helps :)