Question

Which statement is scientifically based? Mutations rarely occur. All mutations are harmful. Some mutations can be contagious, like infections. Mutations are not passed from parent to offspring.

Answer 1

Answer:

Mutations rarely occur

Explanation:

Mutations are genetic changes, i.e., alterations in the DNA sequence. Generally, mutations have deleterious effects, but there are exceptions where mutations may confer an adaptive advantage in a given environment. Mutations are often deleterious, and thereby these genetic changes are rare events. In consequence, mutation rates, i.e., the frequency by which new mutations arise in an organism over time, are generally very low. Finally, mutations that arise only in germ cells can be inherited from a generation to the next generation, while somatic mutations cannot be inherited.

Answer 2

The statement which is scientifically based is: A. Mutations rarely occur.

Mutation can be defined as a change (alteration) in the nucleotide sequence or genetic sequence of a living organism, which result in a variant form that may be transmitted to successive generations.

Basically, mutation is typically caused by a change (alteration) of single base units in deoxyribonucleic acid (DNA) or the insertion, deletion and rearrangement of an organism's genes or chromosomes.

However, mutations rarely occur in most living organisms due to the regulation and control of cell growth through cell cycle.

In conclusion, mutations rarely occur in most living organisms based on scientific researches.

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