Male Baldness Info

Which of the following allows for DNA to make identical copies during interphase?
A) the helical structure
B) the complimentary nitrogen base pairs
C) the imbedded proteins throughout the DNA molecule
D) none of the above
Pattern baldness in males is a trait found on the “x” sex chromosome (pair 23). Which of the following is a true statement?
A) If a boys father is bald, he has a fifty percent chance of also being bald.
B) Baldness can only be inherited from the mother.
C) All males have a twenty-five percent chance of inheriting pattern baldness.
D) none of the above
Which of the following is NOT part of a DNA molecule?
A) nitrogen base
B) phosphate
C) potassium
D) sugar
Thankyou. The most detailed, and best answer will not only recieve the best answer award, but also a thumbs up, and the 2 points for answering the question. (A total of 13 points.)