Genetics part 2

1. Circular prokaryotic chromosomes do not have telomeres

Only linear DNA requires telomeres because it protects the genes from being lost or degraded. Bacteria have circular DNA, there is never any lose of genes. As people age, telomeres shorten and therefore less protection is afforded against damaging coding DNA.

2. During metaphase of meiosis I the two sister chromatids are no longer identical to each other

Due to crossing over.

3. A cell in prophase I of meiosis has twice as much DNA as a cell in the G1 phase

Because DNA has replicated. In G1, it's the resting phase, basically.

Please help explain why this answer is false:

4. A cell in prophase I of meiosis has twice as many chromosomes as a cell in the G1 phase

Actually, this is true.