the role of chromosomes + hormones

Question 1

what are chromosomes ?

Answer 1

chromosomes are biological threads of DNA inside the nucleus of cells
there are 46 chromosomes in each cell

Question 2

what does the 23rd pair of chromosomes determine ?

Answer 2

biological sex

Question 3

testosterone production

Answer 3

produced in larger quantities in men
controls the development of male sex organs + secondary sexual characteristics in puberty

Question 4

what are high levels of testosterone linked to ?

Answer 4

higher levels of aggression, and so explain higher male aggression compared to females

Question 5

production of oestrogen

Answer 5

produced in big quantities in women
oestrogen determines female secondary sexual characteristics eg breast development + menstruation

Question 6

what is oestrogen linked to in terms of the menstrual cycle ?

Answer 6

higher emotionality + irritability

Question 7

when is oxytocin produced ?

Answer 7

released in large quantities during labour + after childbirth

Question 8

what are the benefits of oxytocin ?

Answer 8

promotes feelings of bonding in both men + women
facilitates mother-daughter bonding
reduces cortisol to lower fight or flight response, triggers tend and befriend response instead