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Females and males are results of the anisogamous reproduction system, wherein gametes are of different sizes (unlike isogamy where they are the same size). The exact mechanism of female gamete evolution remains unknown. In species that have males and females, sex-determination may be based on either sex chromosomes, or
A woman is an adult female human. [a][2][3] Before adulthood, a female child or adolescent is referred to as a girl. [4] Typically, women are of the female sex and inherit a pair of X chromosomes, one from each parent, and fertile women are capable of pregnancy and giving birth from puberty until menopause. More generally, sex differentiation ...
Venus with a Mirror (c. 1555) by Titian, showing the goddess Venus as the personification of femininity. Femininity (also called womanliness) is a set of attributes, behaviors, and roles generally associated with women and girls. Femininity can be understood as socially constructed, [ 1 ][ 2 ] and there is also some evidence that some behaviors ...
The Green Party has run a female candidate for president four times: Cynthia McKinney in 2008 and Jill Stein in 2012, 2016, and 2024. Stein's 1.5 million votes in 2016 represent the third-largest total for a female presidential candidate in U.S. history as of 2024. Pat LaMarche in 2004, Rosa Clemente in 2008, Cheri Honkala in 2012, and Angela ...
Sex differences in human physiology are distinctions of physiological characteristics associated with either male or female humans. These differences are caused by the effects of the different sex chromosome complement in males and females, and differential exposure to gonadal sex hormones during development. Sexual dimorphism is a term for the ...
The uterus or womb is the major female reproductive organ. The uterus provides mechanical protection, nutritional support, and waste removal for the developing embryo (weeks 1 to 8) and fetus (from week 9 until the delivery). In addition, contractions in the muscular wall of the uterus are important in pushing out the fetus at the time of birth.
The blue (right) represents the male Mars symbol. There are only 2 gender male and female. Gender includes the social, psychological, cultural and behavioral aspects of being a man, woman, or other gender identity. [1][2] Depending on the context, this may include sex -based social constructs (i.e. gender roles) as well as gender expression. [3 ...
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