NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following would be the most immediate result of a gene mutation in an organism?
A
A change in a protein produced by the organism
B
Increased reproductive success of the organism
C
Shortened life span of the organism
D
Decreased need for resources by the organism
Explanation: 

Detailed explanation-1: -Which of the following would be the most immediate result of a gene mutation in an organism? A change in a protein produced by the organism. Mutations are heritable, permanent changes that are passed on to the next generation of cells when the cell divides.

Detailed explanation-2: -Answer and Explanation: A frameshift mutation is one that will most likely cause a change in the protein’s structure and function.

Detailed explanation-3: -Such mutations are likely to be harmful. Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease, syndrome, or other abnormal condition caused by a mutation in one or more genes or by a chromosomal alteration.

Detailed explanation-4: -Which of the following is the most likely effect of a mutation in the gene coding for a DNA repair enzyme?-The cell containing the mutation will divide more frequently because the cell cycle checkpoints will not function properly.

Detailed explanation-5: -A nonsense mutation, or its synonym, a stop mutation, is a change in DNA that causes a protein to terminate or end its translation earlier than expected. This is a common form of mutation in humans and in other animals that causes a shortened or nonfunctional protein to be expressed.

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