Chromosomes and Genes?

Question

Chromosomes and genes all share all of the following characteristics except?

A) They are both copied during the S phase of the cell cycle

B)They both pair up with their homologues during prophase of mitosis

C) They are both present in pairs in all diploid cells

D) They both undergo segregation during meiosis

E) Their copy numbers in the cell decrease after meiosis, and increase during fertilization

Answer 1

All living things are composed of cells. The number of cells within an organism is phenomenal. In every living organism each cell's nucleus contains all of the genetic information needed to replicate the cell. The genetic material within the cell's nucleus takes the form of chromosomes. A chromosome is composed of DNA and contains all of the hereditary information of a cell.

A gene is a segment of DNA containing the code used to synthesize a protein.

A chromosome contains hundreds to thousands of genes

Answer 2

B)

Prophase is where chromatin condenses into the discrete indentifiable chromosomes.  Metaphase is when chromosomes pair and line up along the center of the cell.

Side note:  Jeff's answer started off correctly in recognizing that since genes are on chromosomes they share the same characteristics, however the answer A is incorrect; the S phase is where DNA Synthesis occurs (hence the term S phase) and genes and chromosomes are both replicated (copied) during S phase.

Answer 3

A)

Answer 4

To set this straight, this question is simply asking

"What do chromosomes NOT do?"

And the reason why (A) is correct is because the cell does not do anything at the S phase... rather the chromosomes are copied in the G2 (maybe it was G1....)  phase.  G, denoting Growth... S denoting Stop...