🔬 Gender and its differences are not solely socially constructed, as there appears to be a biological basis for gender norms.
🌍 While gender norms can vary across cultures, there are some universal patterns observed in childhood play, with girls engaging more in social play and boys in competitive play.
🧠 Understanding the extent of the influence of biology and culture on gender is challenging due to the inability to remove culture entirely for experimentation purposes.
🌈 There are patterns that suggest a connection between sexuality and gender.
👬 Boys who grow up to be gay are attracted to males and exhibit more feminine interests as children.
👭 Girls attracted to girls may exhibit more masculine interests in childhood.
👥 Gender and sexual orientation are connected but not perfectly correlated.
🧬 Evolution favors heterosexuality for reproductive purposes.
🔍 Scientists question why homosexuality persists despite potentially lower reproductive fitness.
🌍 Variation in human traits may contribute to species resilience.
🏳️🌈 Being gay may be a natural variation, with evidence suggesting advantages to families having a certain percentage of gay children.
🔄 In Samoa, a cultural system recognizes a third gender category called fa'afafine, where boys raised as girls partner with men.
💰 Fa'afafine in families contribute their earnings to support their nieces and nephews instead of having their own children.
🌈 There may be an evolutionary advantage for families to have a certain number of gay children, as they can help take care of nieces and nephews.
🧬 Some men may become gay due to factors in the womb, rather than genetics.
📊 Research shows that in families with multiple male pregnancies, the likelihood of later-born males being gay increases.
🧬 Some men are born gay due to the fraternal birth order effect, which suggests an immune response in the mother's system to male hormones.
🚺🚹 The effect only occurs in males born from the same womb, indicating a potential immune response in the mother's system.
🌈 There is strong evidence that a certain percentage of gay individuals are born that way, while there is no strong evidence of being born straight.
🌈 There is a heterosexist assumption that straight people require no explanation while gay people do.
🔎 Logically speaking, being gay doesn't lead to higher reproductive fitness and logically requires an explanation.
🚼 Historically, unpleasant explanations for homosexuality include blaming mothers who are frigid or overly clingy.
🌈 Understanding the factors that contribute to someone's sexual orientation is still limited in scientific research.
👃 Smells, genetic interactions, and facial symmetry are suggested as potential influences on sexual orientation.
❓ However, the specific reasons behind why individuals are straight or gay remain largely unknown.