MCQ
Most studies on human genetics have been made through
- AGenetic engineering
- BEugenics
- CMicroscopic study of chromosomes
- ✓Pedigree charts
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$I.$ In a population, birth rate and death rate refer to per capita births and death respectively
$II.$ In nature, we rarely find isolated single individuals of any species
$III.$ The size of population for any species is stable phenomena
$IV.$ Ecological effects of any factors on a population growth are generally reflected in its size/population density
$R$ : It is the occurrence of horizontal zonation in the ecosystem.