Amutation occurring in a human can be passed
from parent to offspring when it occurs in a
(1) lung cell, due to exposure to a toxic gas
(2) gamete formed in the ovary
(3) body cell undergoing mitosis
(4) heart cell with chromosome damage

2. gamete formed in the ovary. 

gametes of both parents are those cells which fuse to form the offspring, and hence any mutations occurring in the chromosomes of gametes can be tranmitted to the offspring depending on which gametes fuse. all other cells mentioned in options do not transfer any genetic information to offsprings. 

A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.