In: Nursing
Using Susumu Ohno’s gene duplication theory, describe how and why evolution of secondary metabolic pathways evolved chemical diversity in nature. Be concise, no more than 4 sentences.
Ohno concentrated on the significance of gene redundancy in permitting "forbidden" mutations to happen that could confer new functions to proteins. His opening proverb, "natural selection merely changed, while repetition made," reflected a perspective of natural selection as a to a great extent purging, preservationist process.
Ohno insisted that "allelic mutations of effectively existing gene
loci can't represent major changes in evolution." He suggested that
the duplication of duplication of regulatory genes and their
control regions contributed enormously to the development of
metazoans, vertebrates and warm-blooded creatures from unicellular
life forms. In addition, the rate of duplication of the gene varies
among people. Chromosome counts, investigations of chromosome
morphology, assessments of DNA content, and isozyme electrophoresis
have made critical experimental and hypothetical commitments to
look into on gene and genome duplication.