you and your genes3

Question 1

What number is the sex chromosome

Answer 1

23rd

Question 2

What is the difference between the X and Y chromosome

Answer 2

The X chromosome appears to be taller than the y chromosome so there seems to be more genetic information on the x chromosome.

Question 3

What combination gives a male and female

Answer 3

XY and XX

Question 4

Explain why is it the male gamete which determines the sex of the offspring

Answer 4

Because the male will produce either the y or the x chromosome and that will determine if the offspring is a male or female. So there is a gene on the y chromosome that allows the offspring to develop into a male as the female can only give the x chromosome

Question 5

Daw a punnet square of sex determination

Answer 5

X Y
x xx xy
X xx xy
50% of the offspring being male or fmale

Question 6

Explain how the Y chromosome causes the embryo to develop into a male

Answer 6

Because the woman can only give out the x chromosome if the male chromosome is a y then the offspring will be a male.