In nature, there is an exception to every rule. Of the species below, which one has a very unusual genome that violates the "rule"? A. Borrelia burgdorferi, the bacterium responsible for Lyme disease, has a linear genome and up to 21 plasmids. B. E. coli, a common bacterium in the human intestine, has DNA nucleotides A, T, C, and G, with only one OH group on the sugar moiety. C. Humans have a genome formed from 23 pairs of linear chromosomes, each of which is so long that it must be wrapped up and condensed into a special structure to fit in the nucleus. D. Arabidopsis pollen is haploid, carrying only one copy each of five linear chromosomes.

Question

Biology

Kaelyn Booth

12 September, 09:30

In nature, there is an exception to every rule. Of the species below, which one has a very unusual genome that violates the "rule"? A. Borrelia burgdorferi, the bacterium responsible for Lyme disease, has a linear genome and up to 21 plasmids. B. E. coli, a common bacterium in the human intestine, has DNA nucleotides A, T, C, and G, with only one OH group on the sugar moiety. C. Humans have a genome formed from 23 pairs of linear chromosomes, each of which is so long that it must be wrapped up and condensed into a special structure to fit in the nucleus. D. Arabidopsis pollen is haploid, carrying only one copy each of five linear chromosomes.

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Answers (1)

Know the Answer?

Lyric Proctor · Answer 1

Option (A).

Explanation:

Genome may be defined as the haploid set of the chromosomes of the organisms. DNA is present as genetic material in all the organisms except some viruses.

Borrelia burgdorferi has an unusual genome because they have segmented genome and consists of linear replicons. The 21 plasmids or extra chromosomal DNA is also present in this organism.

Thus, the correct answer is option (A).