Answer:
All organisms are made up of the four nucleotide bases of the DNA. Yet still all organisms are different from one another due to the sequence of the arrangement of these nucleotides. The pattern of arrangement of the nucleotides determines which organisms will be more similar and which will be more different from one another. The pattern of arrangement leads to the formation of genetic code which will differ in organisms. Hence, all organisms are made of the 4 nucleotides but differ due to the pattern of arrangement of the nucleotides.
D-low elevation and low relief
The immune system is the bodies defense against invaders and is located in all body tissues with concentration in the mucosal surfaces and skin.
The effect does the chemical referred to as a mutagen has is it causes a permanent change in the genetic material (dna) and is denoted as option D.
<h3>What is DNA?</h3>
This is referred to as deoxyribonucleic acid and is the genetic material in living organisms.
Mutagen on the other hand are agents which cause mutations which means alterations in the DNA of organisms. It affects the transcription and replication of the DNA thereby leading to cell death and other effects such as diseased condition.
This is therefore the reason why option D was chosen as the most appropriate choice.
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The statement, Denaturation of dna is a necessary step in southern blotting procedure because it separates double stranded dna into single stranded dna, is true.
