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Sexual Dimorphism Reproductive behaviors such as

Reproductive behaviors such as courting, mating, and parental behavior ensure a species' survival. Although in animals these activities tend to be either distinctively male or female, humans are generally much more flexible; their high intelligence results in a much more complicated social interaction. Human sexual behavior may, however, be characterized according to the preferred partner's gender. Recent research indicates that sexual orientation may be associated with certain neuroanatomic features. The sexual dimorphic nucleus (SDN) has been found to be larger in heterosexual males and smaller among both females and homosexual men. Moreover, this observation correlates well with certain data obtained from animal studies.

Sexual dimorphism may be defined as characteristic differences between males and females. In animals, some of the most sexually dimorphic behaviors include those associated with reproduction. For example, male sexual behavior involves intromission, pelvic thrusting, and ejaculation. Intromission may be defined as "entry of the penis into the female's vagina" (2:299). This act is typically followed by a rhythmic movement of the male's hips. Eventually, the process results in the discharge of semen. In contrast--at least among animals--female sexual behavior is much more passive. In many species, female reproductive behavior may merely consist of genital exposure, or lordosis. Some female animals, however, may also initiate copulation. For instance, the female rat will often wriggle its ears to attract a male (2:301).

Among humans though, sexual behavior is much more complex. In the most general terms it can be described as involving some sort of friction. The actions which produce this friction may be carried out by either partner separately or both partners together. There is no set of human sexual behaviors which is characteristically dimorphic. Humans may, however, be categor...

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Sexual Dimorphism Reproductive behaviors such as. (1969, December 31). In LotsofEssays.com. Retrieved 10:39, March 28, 2024, from https://www.lotsofessays.com/viewpaper/1708337.html