b6 - sex determination

Question 1

how many pairs of chromosomes are in an ordinary human body cell?

Answer 1

23

Question 2

how many pairs control characteristics only?

Answer 2

22

Question 3

what is the function for the last pair of chromosomes?

Answer 3

23rd pair, carries the genes that determine the sex

Question 4

what are the sex chromosomes in a female?

Answer 4

xx

Question 5

what are the sex chromosomes in a male?

Answer 5

xy