Question

Rh factor is connected to species of monkey
(a) Macaca radiata
(b) Presbytes rhesus
(c) Macaca rhesus
(d) Macaca mulatta

Answer 1

Hint: It is a species of the monkey that belongs to the old world and is generally found in the forest area or even the residential areas. On the name of this species of monkey, the Rh blood group system was named.

Complete answer:
Rh factor was named after the name of the species of monkey called Macaca rhesus. It was named because earlier it was thought that the man and the monkey have similar types of blood cells. When this factor is present then the blood group of the person is positive and if this factor is absent then the blood group is negative.
- The Rh system of the blood group consists of many antigens that are around 49 in number out of which five antigens are well known.
- The five antigens are D, C, c, E, and e that are transmembrane proteins and help in the transport of ions.
- The blood group of a person is said to be positive or negative on the basis of the presence of the rhesus factor.
- If at the time of pregnancy the blood of the mother is Rh- positive while that of the baby is Rh- negative then it may cause serious issues.
- The Rh antibodies are produced when the Rh- positive blood is transfused into the mother or any other person.
- The Macaca rhesus is the common species of the monkey having a round pink face with brown or grey- colored furs on their body.
- According to the IUCN Red List of the Threatened Species, it is found that these monkeys are spread worldwide in large numbers.
So, the correct answer is ‘Macaca rhesus’.

Note: The name rhesus was derived from the king of mythological age Rhesus of Thrace. Later the French naturalist Jean- Baptiste Audebert gave this name to the species of the monkey and stated that the name has no meaning. In 1937 by Karl Landsteiner and Alexander S. Weiner the rhesus system of the blood group was discovered. through their experiment.