Answer:
become more isolated.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
Heredity refers to the transfer of traits (specific characteristics) from the parent of a living organism to her offspring through sexual reproduction or asexual production. Some examples of hereditary traits are dimples, tongue rolling, baldness, handedness, freckles, curly hair, color blindness, height, etc.
A population can be defined as the total number of living organisms living together in a particular place and sharing certain characteristics in common.
Generally, these populations may be divided into a fraction of the population (subpopulation) based on certain factors and reasons. When a population is fragmented into smaller subpopulations, it may become more isolated and experience very low genetic diversity i.e a drift in the genetic makeup of the total number of living organisms living together at a particular place (population).
Hence, fragmentation of a population into smaller subpopulations has an adverse effect because it would affect their health.