NEET BIOLOGY

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GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A certain genetic mutation is found with a high frequency in populations of humans living in places that experienced a deadly disease in the past. This same mutation is rare in places that have no history of the disease. Based on how genes work, this data best supports which of the following explanations?
A
The genetic mutation was present in all populations but did not get passed on in places where humans did not contract the disease.
B
This genetic mutation codes for the production of a protein that provides resistance to the disease.
C
The disease causes the genetic material of humans to mutate just before it causes their disease.
D
Humans with this mutation develop this disease and then spread it to other humans without the mutation.
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.

Detailed explanation-2: -Mutations in somatic cells are called somatic mutations. Because they do not occur in cells that give rise to gametes, the mutation is not passed along to the next generation by sexual means.

Detailed explanation-3: -Genetic abnormalities are conditions caused by changes to the genes or chromosomes. Inherited disorders are caused by gene mutations. These include disorders such as cystic fibrosis, sickle cell disease, and Tay-Sachs disease.

Detailed explanation-4: -Which of the following observations would support the claim that a particular mutation is neutral? The frequency of the mutation goes up and down with no observable effect on the health of a population.

There is 1 question to complete.
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