The Role of chromosomes and Hormones in sex and gennder

• what are the sex differences in sperm cells and egg cells

  a sperm cell (carrying either an X or Y chromosome) fertilises an egg cell (carrying an X chromosome). If the sperm cell carries a Y chromosome fetus = male. If the sperm cell carries a X chromosome fetus = female.
• Describe the SRY gene

  The Y chromosome has an SRY gene that triggers the foetus' gonads to develop into testes. In contrast, to an XX foetus' doesn't have a Y chromosome so doesn't have the SRY gene. This means their gonads don't develop into ovaries.
• Describe the process of hormone production

  The development of tested in males and ovaries in female results in the two secs producing different amounts of hormones. These hormones can influence their secondary sex characteristics and gender.
• Testosterone and it's role in sex characteristics

  This hormone is dominant in males and is invloved in the development of male sex characteristics including increased muscle mass, facial hair and deepening if the voice. It is associated with the masculine gender behaviors including aggression
• Oestrogen with it's role in hormone development

  It is dominant in females and is invloved in the development of female sex characteristics including breast growth and widening of hips. it is also associated with feminine gender behaviors including increased empathy.
• Oxytocin in the role of behavior

  Produced in larger amounts in women than in men. It is responsible for bonding behavior which explains why women are more likely to display behaviors/attitudes such as compassion. It also explains why women are more likely to engage in tend and befriend response while males typically engage in fight or flight
• evaluate the role of hormones in sex and gender

  ✅received supporting evidence of hormone therapy as hormones have effected gender characteristics

  ❌supporting evidence has confounding variables as transgender people easily adapt to the gender they identify with
• evaluate the role of chromosomes in sex and gender

  ✅ supporting evidence from research into atypical sex chromosome patterns (Klinefelter's syndrome) shows abnormal sex chromosomes can influence sex characteristics and gender

  ❌supporting evidence from atypical sex chromosomes have confounding variables, they could have been bullied for their atypical sex characteristics and thus have been bullied that leads them to be shy not the chromosomes
• evaluate the role of hormones and chromosomes in sex and gender

  ✅has received supporting evidence of David who couldn't be socialised into a female gender

  ❌ opposing theory (SLT) suggests gender is learnt through the environment through observation and imitation, says it's due to nurture not nature