Biotechnology—Principles and Processes — BIOLOGY STD 12 Science — Question

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

$(ii)$ Changes occur in phenotype.

$(iii)$ Variation create in $DNA$

$(a)$ Population density is necessarily measured in numbers
$(b)$ Tiger census is often based on pug marks and fecal pellets
$(c)$ Biomass is not a meaningful measure to know population size.
$(d)$ Size of a population for any species is not a static parameter