Which of the following is characteristic of prokaryotic genomes but not eukaryotic genomes? 1. histones
2. enclosed in a nuclear membrane
3. typically consist of a few to several chromosomes
4. circular chromosomes
5. linear chromosomes

4. Circular Chromosomes

Explanation:

We know that eukaryotic chromosomes consist of double-stranded DNA.

But prokaryotic chromosomes are actually circular, which is very different from eukaryotic.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.