Genetic inheritance occurs due to genetic material in the form of DNA being passed from parents to their offspring, we inherit physical traits from our parents when parents pass copies of their genes to their children and such traits are observable characteristics that children inherit from their parents which can be dominant or recessive inheritance of a single gene.
For example chrildren can inherite : Free or attached ear lobes
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Eye Colour. Dominant and recessive genes play a role in determining eye colour of the child,brown eyes,blue eye color,green and hazel.
Elephants, who are important grazers, are instrumental in transforming woodlands into grasslands. This has a tremendous impact on other species that depend on the grass for their survival. The significance of the elephant in this example is B. keystone species.