Q1. Two main cell groups make up the nervous system- neurons and connective tissue cells such as astrocytes and schwann cells. Which are “nervous” cells? Why? What are the major functions of the other cell group?

Q2. The human gametes have about 3 billion bp of DNA in their chromosomes.

a. state the size of the diploid genome in kb (kilo bases; 1kb = 1000bp)

b. If the entire DNA was in relaxed B-DNA form, what would be the average length of a chromosome expressed in cm?

c. On average, how many complete turns would be in each chromosome?

d. If there are around 30-40,000 genes in a human gamete, how numerous genes are there in an average chromosome?