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kobusy [5.1K]
3 years ago
13

Which of the following statements best describes bacteria?

Biology
1 answer:
zubka84 [21]3 years ago
3 0

Answer:

d. Genes that play a role in the same metabolic pathway are organized into an operon.

Explanation:

In prokaryotic organisms like bacteria, polycistronic mRNAs exist which means that each gene does not have a separate promoter of its own. In fact many genes are under the control of a single promoter. These genes being a part of same metabolic pathway are organized into an operon. For example, lac operon and tryptophan operon. In lac operon, three genes named as β-galactosidase, permease and transacetylase are expressed under a single promoter which is known as lac promoter.

In contrast to this, in eukaryotes the mRNAs are monocistronic i.e. only a single gene is controlled under a single promoter.

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