Jack desperately wants to have a son. He and his wife already have three children, all girls. Jack divorces his wife and remarries. He expects that his new wife will be more successful in providing him with a son. Which of the following is true?
a. Jack's chances of having a son are better with his new wife.
b. Jack's chances of having a son are worse with his new wife.
c. Jack's chances of having a son are not changed by a change in wife.
d. Jack will be unable to have a son no matter how many children he fathers.
Question 2What determines the chromosomal sex of a child?
a. Random chance
b. An X chromosome carried by the mother
c. An X or Y chromosome carried by the mother
d. An X or Y chromosome carried by the father
Question 3If you are told that you are about to see a karyotype, you should expect to look at a
a. set of identical twins.
b. phenotype.
c. photograph of a complete set of chromosomes.
d. full-term fetus.
Question 4Who has the set of chromosomes found in a typical female?
a. (XX) Rose
b. (XY) Daisy
c. (YY) Lily
d. (XXY) Ivy