Behavioural genetics is the study of the effects of genes as well as well the environment on the behaviour of the individuals. The scientists who study the Behavioural genetics are known as behavioural geneticists.
In this case Dr. Hakim is studying the influence of genes and the environment on the aggression, which is a kind of behaviour. Hence, Dr. Hakim is a behavioural geneticists, and he works in in the field of behavioural genetics.
It helps scientists improve on research and tests/examinations to understand the object a little more. For Example: The newer modified microscope helps zoom into harder to see microrganisms. So if technology changed then most of our scientific knowledge wouldve been mistaken this whole time. We wouldnt know many things if technology didnt exist.
This is a song about adaptation not classification,
with cladograms you dont know whats up,
in your domain its your kingdom.
think about fitness, try evolution,
like a pokemon abra into kadabra.
like a fossil of areodactyl,
going into extinction.
homology try taxomony
with your mind your not a phony.
genetic variation with genetic equilibrum,
Go hand in hand cant even believe them.
genetic variation cant get left out,
truthfully you cant go without.
Natural selection in speciation
dont even know how to go with the flow.
P.S : i made this up as i went (please like it)
C. Is the answer for sure