STD 12 - 5. molecular basis of inheritance — BIOLOGY STD 12 Science — Question

$(i)$ Due to alteration of $DNA$ sequences genotype is change.

$(ii)$ Changes occur in phenotype.

$(iii)$ Variation create in $DNA$

$(a)$ Using sterile needles

$(b)$ Transfusion of blood from infected person

$(c)$ Infected mother to foetus

$(d)$ Kissing

$(e)$ Inheritance

Choose the correct answer from the options given below.