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Answer:
The difference between molecular biology and comparative biochemistry are:
Molecular biology is the branch of biology in which we study about the chemical composition and structure of atoms of macromolecules such as protein and nucleic acid which are the main component of life forming substances, while Comparative biochemistry is a branch of chemistry in which we study the similarities and differences between different biological processes that occurs in different living organisms.
A condition in which a single mutant gene affects more than one distinct characteristic of an individual is referred to as Pleiotropy.
<h3>What is Pleiotropy?</h3>
- Pleiotropy occurs when one gene influences two or more seemingly unrelated phenotypic traits.
- Such a gene that exhibits multiple phenotypic expressions is called a Pleiotropic gene.
- Pleiotropy can arise from several distinct but potentially overlapping mechanisms, such as gene pleiotropy, developmental pleiotropy, and selectional pleiotropy.
- An example of pleiotropy is phenylketonuria.
- So, when a single trait mutant gene controls more than one trait it is called Pleiotropy and it can cause the various syndrome.
To learn more about Pleiotropy,
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<h3>Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells.</h3>
The answer is A
Explanation:
Two classes of genes, oncogenes and tumor suppressor genes, link cell cycle control to tumor formation and development. Oncogenes in their proto-oncogene state drive the cell cycle forward, allowing cells to proceed from one cell cycle stage to the next.
