Which of the following is not a morphological variation in human beings?
Answer Details
The morphological variations refer to the differences in physical characteristics or traits among individuals of a species.
Among the options given, "blood groups" are not a morphological variation. Blood groups are determined by the presence or absence of certain molecules on the surface of red blood cells. This variation is determined by genetics, and it does not involve physical traits that can be seen externally.
On the other hand, size, color, and fingerprints are morphological variations that can be observed externally. Size refers to the variation in body height, weight, and overall body structure. Color refers to the differences in skin, hair, and eye color among individuals. Fingerprints refer to the unique patterns on the fingertips, which are used as a means of identification.
In summary, while blood groups are a variation among humans, they are not a morphological variation as they are not externally visible.