Describe the structure of giant polytene chromosomes and how they arise.

In eukaryotic DNA,

along a 6000-bp segment of DNA, approximately how many molecules of each kind of histone protein do you expect to find? Explain your answer.

In eukaryotic DNA,

where are you most likely to find histone protein H1?

In eukaryotic DNA,

where are you most likely to find histone protein H4?

Describe the importance of light and dark G bands that appear along chromosomes.