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A man is an adult male human. [a] [2] [3] Before adulthood, a male human is referred to as a boy (a male child or adolescent). Like most other male mammals, a man's genome usually inherits an X chromosome from the mother and a Y chromosome from the father. Sex differentiation of the male fetus is governed by the SRY gene on the Y
In humans, the word male can be used in the context of gender, such as for gender role or gender identity of a man or boy. [7] For example, according to Merriam-Webster, "male" can refer to "having a gender identity that is the opposite of female". [24] According to the Cambridge Dictionary, "male" can mean "belonging or relating to men". [25]
The male reproductive system consists of a number of sex organs that play a role in the process of human reproduction. These organs are located on the outside of the body, and within the pelvis .
If sperm competition results in the rival male's sperm fertilising the egg, cuckoldry could occur. This is the process whereby males unwittingly invest their resources into offspring of another male and, evolutionarily speaking, should be avoided. [33] The most researched human penis adaptations are penis size and semen displacement. [34]
Human male sexuality encompasses a wide variety of feelings and behaviors. Men 's feelings of attraction may be caused by various physical and social traits of their potential partner. Men's sexual behavior can be affected by many factors, including evolved predispositions , individual personality , upbringing , and culture .
In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. Hormone levels in the male parent affect the sex ratio of sperm in humans. [25]
As previously reported, the New Jersey State Police alerted the public to human remains found in a refrigerator on Dec. 22 in Cape May County's Belleplain State Forest — asking for help in ...
Human is a loanword of Middle English from Old French humain, ultimately from Latin hūmānus, the adjectival form of homō ('man' – in the sense of humanity). [9] The native English term man can refer to the species generally (a synonym for humanity) as well as to human males. It may also refer to individuals of either sex. [10]