Question

An eukaryotic chromosome differs from a bacterial chromosome in having ______.

Options

• reverse transcriptase

• introns

• start and stop signals

• thymine instead of uracil

Answer 1

An eukaryotic chromosome differs from a bacterial chromosome in having introns.

Explanation:

Eukaryotic chromosomes contain introns, which are non-coding sequences of DNA that interrupt the actual protein-coding regions (exons). These “intervening” sequences are transcribed into pre-mRNA but are removed during a process called splicing before the protein is made. Bacterial chromosomes, in contrast, are much more compact and generally lack introns.