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Externally, the most sexually dimorphic portions of the human body are the chest, the lower half of the face, and the area between the waist and the knees. [7] Males weigh more than females on average. [8] On average, males are taller than females by about 10%. [8]
Gender-based medicine, also called "gender medicine", is the field of medicine that studies the biological and physiological differences between the human sexes and how that affects differences in disease. Traditionally, medical research has mostly been conducted using the male body as the basis for clinical studies.
The human Y chromosome showing the SRY gene which codes for a protein regulating sexual differentiation. Sexual differentiation in humans is the process of development of sex differences in humans . It is defined as the development of phenotypic structures consequent to the action of hormones produced following gonadal determination. [ 1 ]
The authors differentiate between sex differences, caused by biological factors, and gender differences, which "reflect a complex interplay of psychological, environmental, cultural, and biological factors". [14] Gender identity is thus seen as a "psychological concept that refers to an individual's self-perception". [14] Other studies have ...
That could be considered gender non-conforming, since nail polish is typically attributed to female-presenting people in our society. Or, on a larger scale, the person might not choose to identify ...
The X and Y sex chromosomes are different in shape and size from each other, unlike the rest of the chromosomes , and are sometimes called allosomes. In some species, such as humans, organisms remain sex indifferent for a time during development ( embryogenesis ); in others, however, such as fruit flies, sexual differentiation occurs as soon as ...
Expression: One's gender expression is what someone presents to the world—including clothing, voice, actions, and more—that aligns with their gender (and is not dependent on the biological sex ...
The male's increased size is believed to be advantageous because males collect and defend empty snail shells in each of which a female breeds. [52] Males must be larger and more powerful in order to collect the largest shells. The female's body size must remain small because in order for her to breed, she must lay her eggs inside the empty shells.