Question

which best describes the flow of genetic information?
a. genetic information flows from dna to rna to protein.
b. genetic information is carried only by dna.
c. genetic information flows from gene to allele to protein.
d. genetic information cannot be transmitted outside the nucleus.

Explanation:

The central dogma of molecular biology states that genetic information flows from DNA to RNA (through transcription) and then from RNA to protein (through translation). Option B is incorrect as RNA can also carry genetic information in some viruses. Option C is wrong because alleles are variants of genes and not an intermediate in the flow of genetic - information in the standard pathway. Option D is incorrect since mRNA (carrying genetic information) is transported out of the nucleus for translation in the cytoplasm.

Answer:

A. Genetic information flows from DNA to RNA to protein.