Chromosomes - SEX & GENDER

Question 1

how many pairs of chromosomes do humans have

Answer 1

23

Question 2

what is sex determined by

Answer 2

sex chromosomes

Question 3

male sex chromosome configuration

Answer 3

XY

Question 4

female sexy chromosome configuration

Answer 4

XX

Question 5

what does the Y chromosome contain

Answer 5

the SRY gene

Question 6

what does the SRY gene cause

Answer 6

male physical development at the fetal stage

Question 7

what does SRY stand for (SRY gene)

Answer 7

sex-determining region Y protein”

Question 8

what is the SRY gene

Answer 8

it’s a transcription factor that binds to DNA to control other genes (an epigenetic change)

Question 9

how does every fetus appear at the beginning

Answer 9

as female - until a few weeks after contraception

Question 10

when is sex organ development completed

Answer 10

at around 3 months after contraception

Question 11

what happens after the sex organ development

Answer 11

lutropin is produced in both sexes

Question 12

where is lutropin produced from

Answer 12

adrenal glands

Question 13

what do testes contain

Answer 13

leydig cells

Question 14

what do leydig cells respond to and how

Answer 14

they respond to lutropin by producing testosterone

Question 15

what does testosterone drive

Answer 15

further male development

Question 16

two syndromes included in atypical sex chromosomes patterns (intersex)

Answer 16

klinefelter’s syndrome and turner’s syndrome

Question 17

who does Klinefelter’s syndrome affect

Answer 17

1 in 100 males

Question 18

what chromosome configuration do men with Klinefelter’s have

Answer 18

XXY

Question 19

how is a child with Klinefelter’s born

Answer 19

with a penis and develops male traits

Question 20

common features of Klinefelter’s

Answer 20

infertility, lacks muscular definition, feminised masculine characteristics

Question 21

who does Turner’s Syndrome affect

Answer 21

1 in 2000 females

Question 22

what chromosome configuration causes Turner’s syndrome

Answer 22

XO

Question 23

what are people with Turner’s born with

Answer 23

a vagina and womb but undeveloped ovaries

Question 24

features of Turner’s syndrome

Answer 24

short/stout build, webbed neck, narrow hips, irregular internal organs, no period

Question 25

what is the cause for Turner’s

Answer 25

an undeveloped sperm, causes partial female development

Question 26

disadvantage of Klinefelter’s syndrome

Answer 26

usually causes body dysmorphia, general psychological issues

Question 27

disadvantages of Turner’s syndrome

Answer 27

physically ‘different’ and ‘disadvantaged’