Describe the mechanism by which histone modifications are established after DNA replication and cell division. What are some things that could go wrong if modifications can't be maintained? Think about what histone modifications do to DNA and why cells maintain parts of their chromosome as heterochromatin.

Describe the mechanism by which histone modifications are established after DNA replication and cell division. What are some things that could go wrong if modifications can't be maintained? Think about what histone modifications do to DNA and why cells maintain parts of their chromosome as heterochromatin.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 25QP: Discuss the levels of chromosomal organization with reference to the following terms: a. nucleotide...

See similar textbooks

Similar questions

Which one of the following statements about nucleosomes is false? a) The DNA double helix wraps around the nucleosome. b) The sequence of amino acid in a histone tail is altered during chromatin remodeling. c) A nucleosome is composed of 8 histone proteins; two copies of each type of histone. d) A large percent of the nucleosome is positively charged.
Histone _______ is not part of the histone octamer, but binds to linker DNA and is responsible for higher-order chromatin structureA-H1B-H2AC-H4D-H3E-H2B
Discuss histones and how methylation and acetylation of DNA and histones can affect the production of a protein. Include a picture to show acetylation of histones and how it affects chromosome condensing
Heterochromatin and Euchromatin Have Which Different Histone modifications
Which histone helps stabilize the solenoid structure of eukaryotic chromatin? H4 H3 H2B H2A H1
Which of the following is likely to be transcriptionally expressed? euchromatin and DNA with methyl groups euchromatin DNA with methyl groups DNA with acetylated histones euchromatin and DNA with acetylated histones
Describe how reversible chemical changes to DNA and histones are linked to chromatin modification.
Describe how reversible chemical changes to histones are linked to chromatin modification.
_____ is the combination of a seat, elation, another modifications to the histones that allow for changes in DNA winding and unwinding a. Epigentics b. Histone code c. Heterochromatin d. Post translational modifications
Histones form more accessible chromatin because of Select one: a. Reduced electrostatic attraction between the histone and the negatively charged DNA backbone b. Increased electrostatic attraction between the histone and the negatively charged DNA backbone c. Reduced covalent bonding between the histone and the negatively charged DNA backbone d. Increased covalent bonding between the histone and the negatively charged DNA backbone
Describe the appearance and composition of chromatin and the structure of nucleosomes. Comment on the significance of histone proteins.
Which of the following statements concerning eukaryotic chromatin is true. Histones have an overall negative charge. Euchromatin is more condensed then heterochromatin. After replication nucleosomes are made up of a mixture of old and new histone proteins. Euchromatin is associated with the centromere and telomere regions. Heterochromatin are regions of active transcription.