Question

I have three questions, can somebody help me, please and thank you!

1. Which of the following includes all the others?

Choose one answer.
a. DNA molecule
b. histone
c. chromosome
d. nucleus

2. Which of the following is NOT an example of chromosome damage?

Choose one answer.
a. inversion
b. insertion
c. deletion
d. duplication

3. If a woman who is a carrier of a sex-linked trait married a man with the trait, the chance that a child would have the trait would be

Choose one answer.
a. 25 percent.
b. 50 percent.
c. 75 percent.
d. 100 percent.

Answer 1

chromosomes + histones = chromatin

chromosomes are made of DNA molecules

these are inside the nucleus in eukaryotic cells

Answer 2

the second is duplication.. the others alter the sequence (of bases e.g A, C) in one way or another.

for the third draw a pun net square. Females have 2 X's, males have XY. So all males will show the trait, while females can be carriers or not carriers only.