Dr. Hakim is interested in studying aggression through research on how the structure and function of genes interact with our environment to influence aggressive behavior. Dr. Hakim works in the field of:

He works in the field of Molecular genetics.

Explanation:

Molecular genetics is a fundamental theory that determines the structure and function of genes in an organism genome by using an investigative approach. It is based on the combination of fields in biology like biochemistry, classical Mendelian inheritance, cellular biology, and biotechnology. Molecular biology. Molecular geneticists are always eager to about how genes control the development and function of organisms. The identification of disease-related genetic abnormalities by mapping genetic genome, analyzing genetic changes in tumors and developing new procedures and tests are the some of credits of Molecular Genetics.

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.