Question

A biological species has:

• A. Broad morphological similarity
• B. Similar karyotype
• C. Genetrically closed system
• D. All the above

Answer 1

The Correct Option is D

All three options (A, B, and C) are the characteristics of a biological species.

Organisms belonging to the same biological species exhibit resemblances such as:

1. Broad Morphological Similarities: Members of the same species typically manifest comparable physical traits since their genetic composition remains consistent within the species.
2. Similar Karyotypes: Biological species commonly demonstrate resemblances in their karyotypes, referring to the arrangement of chromosomes.
3. Genetic Closed Systems: Species function as genetically closed systems, wherein they reproduce through mating within their species, resulting in offspring with identical genetic compositions.

Therefore, biological species share these commonalities due to their akin genetic makeup.

So, the correct option is (D): All the above.