Exam 12: DNA Organization in Chromosomes

In the formation of nucleosomes,one histone class,H1,is not directly involved,yet it does associate with DNA to form higher level chromosomal structures.Where does this histone (H1)associate?

List the components of a nucleosome.

Describe the chromosomal conformations of φX174 and polyomaviruses.

List several configurations that characterize different viral chromosomes.

Eukaryotic chromosomes contain two general domains that relate to the degree of condensation.These two regions are ________.

A particular variant of the lambda bacteriophage has a DNA double-stranded genome of 51,365 base pairs.How long would this DNA be?

Viral chromosomes exist in a variety of conformations and can be made up of ________.

In addition to highly repetitive and unique DNA sequences,a third category of DNA sequences exists.What is it called,and what types of elements are involved in it?

How do VNTRs relate to DNA fingerprinting?

That some organisms contain much larger amounts of DNA than are apparently "needed" and that some relatively closely related organisms may have vastly different amounts of DNA is more typical in ________.

Telomerase is an enzyme involved in the replication of the ends of eukaryotic chromosomes.

Describe the basic structure of a nucleosome.What is the role of histone H1?

In human chromosomes,satellite DNA sequences of about 170 base pairs in length are present in tandem arrays of up to 1 million base pairs.Found mainly in centromere regions,these DNA sequences are called ________.

Chromatin of eukaryotes is organized into repeating interactions with protein octamers called nucleosomes.Nucleosomes are composed of which class of molecules?