It is hoped that advances in will allow psychologists to focus more on prevention of psychological disorders rather than only treatment.

neuroscience

Explanation:

It is hoped that advances in  neuroscience will allow psychologists to focus more on prevention of psychological disorders rather than only treatment.

after advancement in field of neuroscience  psychologists shift their concern and focus from treatment to prevention of psychological disorders.

which sentences ? that question is incomplete

answer; the smaller of the two reciprocal products of translocated chromosomes is lost; after several cell divisions, only the larger of the two translocated chromosomes remains,its reciprocal is lost;