Sexual Selection and Natural Selection

Selection is a functional relationship between phenotype and adaptability. Because natural selection is the production of living organisms based on their physiological characteristics, the spring water of the young generation has strong, ideal and genetic aspects of the parent. Some will adapt better than others due to their phenotype due to their individual characteristics, although they adapt more to their environment (Sinervo, 1997). According to Charles Darwin, health can be explained in three different ways that interfere with the average of the phenotypic features of the population.

Sexual culling is an inevitable consequence of natural selection, and the two processes work the same way. Natural selection and sexual selection often give rise to different selective pressures: natural selection produces characteristics promoting reproductive and survival, but sexual selection enhances reproductive success but sacrifices survival (Birkenhead & Moller's Darwin's Ghiselin (1969) 1991). Selection of gender occurs when gender members disproportionately intersect with heterosexual members based on secondary characteristics (ie, behavior or structure other than reproductive organs or gametes). Sexual selection can be done in two ways; because of competition (internal) or gender competition or sales (middle-aged) between homosexuals, women choose the most suitable male (Clayton 1991 )

There are different forms of evolutionary choice that can keep the change, ie sexual choice, natural choice. Sexual selection is the ability of an organism to breed and propagate with your spouse. Gender dimorphism is the difference in morphology between male and female members of the same species. Sexual disorder is not a difference of sexual organs, but a physical difference between men and women. Gender dimorphism includes differences in size, color or body structure between sexes. Sexual dimorphism is in addition to balancing polymorphism. This is a genetic polymorphism that is stabilized and maintained within a population by natural selection because heterozygotes of a particular allele have higher fitness.

In addition to natural selection, there are two other types of options. Darwin believes that different sexual preferences from natural selection involve selecting features based on roles and roles in mating. Although artificial selection is the selective breeding of human species to increase the desired trait, these traits are not necessarily more adaptive.

The choice of sex is a natural choice for factors that make the crossing of organisms successful. When the sexual appeal of a characteristic exceeds the survival responsibility, the characteristics of survival change. People live for a short period of time, but those who produce many children are more successful than those who produce longevity. The former gene will ultimately rule that kind of gene pool. Among many species, especially polygamous species, only a few male in all females are single, and sexual selection causes severe gender dimorphism. Among these species, men compete with other men for spouses. Games can be adjusted directly or by women. Among the species selected by women, men compete by showing outstanding phenotypic characteristics and / or performing wonderful courtship behavior. Then the most interested men, usually male and female colleagues with the most strange display