Factors could influence sex determination

Sex determination is explained based on different philosophies. In humans, sex is determined based on chromosomes, the X and Y chromosomes. However, unlike humans, the determination of the sex of fish does not depend on the chromosomes. There are several factors that could influence sex. Temperature is a common factor. Certain temperature ranges favor females over males sex and vice versa. These factors could influence sex determination, hence it is very flexible. These factors are said to influence the fate of both somatic and germ cells. In this case, if the group of fish has the same or identical genome but is incubated at varying temperatures, they will have different sexes.