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Sex definition biology

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Added: 03.10.2019
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The distinction between sex and gender differentiates a person's biological sex the anatomy of an individual's reproductive system , and secondary sex characteristics from that person's gender , which can refer to either social roles based on the sex of the person gender role or personal identification of one's own gender based on an internal awareness gender identity. In ordinary speech, sex and gender are often used interchangeably. Some languages, such as German or Finnish, have no separate words for sex and gender, and the distinction has to be made through context. Among scientists, the term sex differences as compared to gender differences is typically applied to sexually dimorphic traits that are hypothesized to be evolved consequences of sexual selection. Anisogamy , or the size differences of gametes sex cells , is the defining feature of the two sexes. By definition, males have small, mobile gametes sperm ; females have large and generally immobile gametes ova or eggs.
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Biological sex | definition of Biological sex by Medical dictionary

Introduction Patterns Mechanisms Descent with modification Mechanisms of change Genetic variation Mutations The causes of mutations Gene flow Sex and genetic shuffling Development Genetic drift Natural selection Natural selection at work What about fitness? Sexual selection is a "special case" of natural selection. Sexual selection acts on an organism's ability to obtain often by any means necessary! Selection makes many organisms go to extreme lengths for sex: peacocks top left maintain elaborate tails, elephant seals top right fight over territories, fruit flies perform dances, and some species deliver persuasive gifts.
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Sex and gender distinction

Complementarity as conservative Catholics use the term, however, is more than biology. People are starting to recognize that depression must relate to biology , because who would give up such an outwardly gifted life? Both are graduate students in biology at the University of Notre Dame.
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Is it safe to have sex with my pregnant wife? My wife and I are 4 months pregnant and are expecting our first baby. Can we have sex? I am afraid it will harm the baby.
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