Question59:-Which among the following is an immunologically privileged site?
A:-Eye
B:-Testis
C:-Central nervous system
D:-All of these
Correct Answer:- Option-D
Question60:-Position emission tomography is based on
A:-Coulomb scattering
B:-Pair production
C:-Pair annihilation
D:-Compton effect
Correct Answer:- Option-C

Question61:-Which of the following are wrong pairs?

(i) Autoimmune haemolytic anaemia : Rh antigen

(ii) Graves disease : thyroid stimulating hormone receptor
(iii) Myasthenia gravis : Adrenaline receptor

(iv) Systemic lupus erythematosus : Rh antigen

A:-(i) and (ii)

B:-(ii) and (iii)

C:-(iii) and (iv)

D:-(i) and (iv)

Correct Answer:- Option-C

Question62:-Which of the following is wrong with respect to radionuclide used in
nuclear medicine?
(i) must emit gamma ray with the right energy to allow detection
(ii) mush have a short half-life
(iii) must be cheap
(iv) must be readily available

A:-(ii) only

B:-(i) only

C:-all of these

D:-none of these

Correct Answer:- Option-D

Question63:-Directional selection

(i) occurs due to the change in the environmental in particular direction
(ii) favors the phenotype which is non-average or extreme

(iii) eliminates normal or average individuals

(iv) keeps a population genetically constant

A:-(i), (ii) and (iii) are correct
B:-(i), (ii) and (iv) are correct