Respiratory distress syndrome in premature infants is caused by the absence of

Thomsen disease is associated with

A. Muscular dystrophy

B. Myasthenia gravis

C. Myelosis

D. Myopathy

Chicken pox is caused by

A. Variola virus

B. Varicella zoster

C. Rota virus

D. Tanapox

The procedure of removing ovaries is called

A. Salpingectomy

B. Oophorectomy

C. Vasectomy

D. Colostomy

Sex ratio is defined as

A. No. of females/1000 males

B. No. of males/1000 females

C. No. of female births in 1000 births

D. No. of male births per 1000 births