SEX DETERMINATION

SEX DETERMINATION

Human beings have 46 chromosomes in each cell. The males have XY sex chromosomes, whom produce gametes with X and Y chromosome, while females have the XX chromosomes. The sex of a child is determined by the type of chromosome he/she is receiving from the father. If sperm carries the X chromosome, then the child will be a girl, while a sperm that carries Y chromosome will be a boy.

PART 1

Study the punnett square showing a cross of male and a female sex chromosomes.

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

PART 2

Express your agreement or disagreement on each of the statement on the next slide.

Multiple Choice

The two male sex chromosomes are XY.

• agree

• disagree

Multiple Choice

Female always gives an X chromosome during fertilization.

• agree

• disagree

Multiple Choice

The sex of the child produced when an egg is fertilized by a sperm carrying a Y chromosome is female. .

• agree

• disagree

Multiple Choice

Male sex chromosome determines the sex of an offspring.

• agree

• disagree

Multiple Choice

If X chromosome is given by male and X from female, couple will have a baby girl.

• agree

• disagree

END OF ACTIVITY 2