Question

2. A human female inherits...
a. two copies of every gene located on the X chromosome
b. twice as many sex chromosomes as a human male inherits
c. one copy of every gene located on the y chromosome

Answer 1

b. twice as many sex chromosomes as a human male inherits

Answer 2

It's not B.

Males and females both have two sex chromosomes.
That's exactly one pair.

Females have (X X)
Males have (X Y)

Two chromosomes each.

Answer 3

x chromosome only determines the sex. recall turner's syndrome and klinefelter's syndrome there you will get the idea that x chromosome only determines the sex. irrespective y chromosome dear.

Answer 4

@Vijayakumar.N

Take a look at this article:
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/SexChromosomes.html

You wanna scroll down to..."X Chromosome Inactivation,"
and read the very first sentence?

And after you read that,
you can take a look at option A, for this question.

~~~~~~~~~~

You can also read the very first sentence of this article:
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/SexChromosomes.html

It tells us that human cells contain TWO sex chromosomes,
regardless of gender.

That means that males and females both have TWO sex chromosomes.
Neither one has twice as much as the other.

Both the X and Y chromosomes determine sex.
(Someone with both X and Y would be male, of course.)