Question

question 19 of 25
how can a mutation in a gene lead to a new trait in an organism?
a. the mutated gene codes for a protein that causes a new trait.
b. the mutated gene causes the organism to have more chromosomes.
c. the mutated gene will be replicated using the pcr process.
d. the mutated gene will be corrected by rna polymerase.

Explanation:

Genes code for proteins. A mutation in a gene can change the sequence of amino acids in the protein it codes for. This altered protein can then lead to a new trait in an organism. Option B is incorrect because a mutated gene doesn't directly cause more chromosomes. Option C is wrong as PCR (Polymerase Chain Reaction) is a laboratory technique, not a natural process in the organism for dealing with mutated genes in this context. Option D is incorrect because RNA polymerase doesn't correct mutated genes in the way described here.

Answer:

A. The mutated gene codes for a protein that causes a new trait.