Multiple choice

The maximum number of chromosomes is noticed in which of the following animals?

  1. Ascaris

  2. Chironomus

  3. Pheritima

  4. Aulacantha
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Aulacantha, a radiolarian protozoan, has an extraordinarily high chromosome number, with some species having up to 1600 chromosomes. This is the highest known number in any animal. In contrast, humans have 46 chromosomes, while most organisms have far fewer than Aulacantha.

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