Question

Match the lists and find the correct option.

(a)	ABO blood group	(i)	Landsteiner and Wiener
(b)	Rh factor	(ii)	Morgan and Castle
(c)	Sex linkage of Drosophila	(iii)	Landsteiner
(d)	Chromosomal theory of linkage	(iv)	T.H. Morgan

• A. a-iii, b-i, c-iv, d-ii
• B. a-iv, b-i, c-iii, d-ii
• C. a-ii, b-i, c-iv, d-iii
• D. a-iii, b-ii, c-iv, d-i

Answer 1

The correct option is A a-iii, b-i, c-iv, d-ii

• Landsteiner was awarded the Nobel Prize for his description of the human ABO blood group system.
• Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells. It was discovered in 1937 by Karl Landsteiner and Alexander S. Wiener.
• The inheritance of characters linked to a particular sex is called sex-linked inheritance. It was first discovered by T.H. Morgan in Drosophila.
• Morgan and Castle formulated the chromosome theory of linkage which stated that the tendency of genes to remain together will be more if the linkage is stronger and the tendency to segregate more will be there if the linkage is weak.
  

So, the correct answer is 'a-iii, b-i, c-iv, d-ii'.