BIOMOLECULES AND ENZYMES

BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
All mutations in a DNA sequence are harmful.
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Of course, not all mutations are “bad.” But, because so many mutations can cause cancer, DNA repair is obviously a crucially important property of eukaryotic cells.

Detailed explanation-2: -Are genetic mutations bad? Not all genetic mutations lead to genetic disorders. Some genetic mutations don’t have any effect on your health and well-being. This is because the change in the DNA sequence doesn’t change how your cell functions.

Detailed explanation-3: -Answer and Explanation: “All mutations are harmful and increase the risk of disease such as cancer” is a false statement. It should read “Some mutation may be harmful and increase the risk of diseases such as cancer, but many are beneficial. The majority of mutations are nearly neutral or harmful.

Detailed explanation-4: -B. Silent mutations are a result of the redundancy (degeneracy) of the genetic code: This is false, as silent mutations are the result of a base substitution that has no discernible effect on the amino acid sequence of a protein.

Detailed explanation-5: -Sometimes, gene variants (also known as mutations) prevent one or more proteins from working properly. By changing a gene’s instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all.

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