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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". [23] According to the Cambridge Dictionary, "male" can mean "belonging or relating to men". [24]
[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 chromosome.
The human brain. Differences in male and female brain size are relative to body size. [83] Early research into the differences between male and female brains showed that male brains are, on average, larger than female brains. This research was frequently cited to support the assertion that women are less intelligent than men.
Genetic sequencing is a second way for a scientist to determine biological sex in both humans and animals (distinct from sexing). It became widely available and popular at the turn of the century. [2] Genetic sequencing also allows for the determination of rare genetic events when the y chromosome is incomplete and a male animal has female ...
Sexual dimorphism is the condition where sexes of the same species exhibit different morphological characteristics, including characteristics not directly involved in reproduction. [1]
[2] [3] [4] It is distinct from the definition of the biological male sex, [5] [6] as anyone can exhibit masculine traits. [7] Standards of masculinity vary across different cultures and historical periods. In Western cultures, its meaning is traditionally drawn from being contrasted with femininity.
Robert Stoller, whose work was the first to treat sex and gender as "two different orders of data", in his book Sex and Gender: The Development of Masculinity and Femininity, [46] uses the term 'sex' to refer to the "male or the female sex and the component biological parts that determine whether one is a male or a female". [47]
Often only the mean or mean difference between sexes is given. This may or may not preclude overlap in distributions. For example, males are, on average, taller than females, [6] but an individual female could be taller than an individual male. The extents of these differences vary across societies.