Gender and Chromosomes

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Gender and Chromosomes

1 23 pairs of chromosomes

1.1 XX - Female

1.2 XY - Male

1.3 Autosomes, they carry the same information

1.4 Usually there is a direct link between chromosomal sex and external and internal genitalia

1.4.1 During prenatal development male and female embros look the same

1.4.1.1 The sex organs begin to develop differently at six weeks

2 Atypical chromosome disorders

2.1 Turners syndrome

2.1.1 Identify themselves as females

2.1.2 XO - Only survivable condition where one chromosome is inherited

2.1.3 Physical characteristics

2.1.3.1 No ovaries (no menstruation)

2.1.3.1.1 Sterile

2.1.3.2 No breasts

2.1.3.3 Short

2.1.3.4 Webbed neck

2.1.3.5 Low set ears

2.1.4 Psychological characteristics

2.1.4.1 High verbal ability

2.1.4.2 Low spatial and mathematical ability

2.1.4.3 Difficulty relating to peers

2.1.5 1 in 2000 births

2.2 Klinfelter's syndrome

2.2.1 XXY - extra X chromosome

2.2.2 Male

2.2.3 1 in 500 births

2.2.4 Physical characterists

2.2.4.1 Undescended testes and undersized penises

2.2.4.2 Rounding of body contours

2.2.4.2.1 Some breast development

2.2.4.3 Little body hair

2.2.4.4 Long limbs

2.2.4.5 Clumsy

2.2.5 Psychological characteristics

2.2.5.1 Lack of interest in sexual activity

2.2.5.2 Passive

2.2.5.3 Lacking in ambition

2.2.5.4 Poor language and reading ability

2.2.5.5 Poor judgement

2.2.5.6 High level of gender confusion

2.3 Atypical chromosome patterns support the role of genetics in gender development as characteristics are different from typical chromosome patterns

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Gender and Chromosomes

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	Created by Jessica Phillips over 4 years ago