Which statement about nucleosomes is correct?

What enzyme copies DNA during the initiation of gene expression?

Chromatin structure affects transcription mainly by:

In population genetics, what term refers to the total genetic makeup of the population?

Genes that inhibit the cell cycle and promote apoptosis are called?

Should Harry S. Truman have dropped the atomic bomb?  Weigh the issue he faced and explain why he chose this decision.

  Which one of the following is not correct?  

Which one of the following describes the structure that is pointed by green arrow in the picture? Thick fibrous outer covering ofposterior 5/6 of the eyeball• Protects the eyeball and maintains its shape

The ___________connects brain to the spinal cord.   

Which one of the following is not correct about the eye?