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.

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.

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 21QP: Which of the following statements is not true about DNA replication? a. It occurs during the M phase...

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Which of the following statements about heterochromatin is FALSE? It contains many repeated sequences, but few actively transcribed genes. It remains condensed through most of the cell cycle. It is found next to the centromeres and on short arms in human chromosomes. It is enriched for transposable elments Histone proteins in heterochromatin are heavily acetylated, reducing their affinity for the DNA backbone.
Address the general properties of the chromatin within the following types of DNA: DNA undergoing active transcription DNA within a mitotic chromosome DNA immediately after passage of the replication fork centromeric DNA
Heterochromatin is often associated with the of histones. Acetylation Phosphorylation Ubiquitination Methylation
Which of the following statements is TRUE? O Interphase chromosomes are loosely compacted, overlapping, and intertwined with each other within the nucleus. O Interphase chromosomes are loosely compacted and do not associate with histones until the cell is preparing to divide. O Interphase chromosomes are also known as euchromatin. Condensed, metaphase chromosomes are also known as heterochromatin. O Radial loops in the condensing chromosome are formed due to interactions between 30 nm fibers and the scaffolding proteins of the nuclear matrix - producing the 300 nm fiber of the chromosome O None of these are TRUE
Expressed genes are found in: euchromatin DNA that is tightly packed centromeres constitutive heterochromatin
In the following diagram, what is the correct term for the structures indicated by letter B? O histones B Onucleosome O linker DNA GRUN 30 nm Chromatin Fiber D C B Jule
Histones contain many basic amino acids including lysine. DNA and histones collectively form chromatin. Open chromatin is much more open and accessible to the transcriptional machinery than closed chromatin. Histone lysine acetylation is associated with open chromatin and occurs near genes that are being actively transcribed. Part A Given what you know about the chemical properties of DNA and the function of histones. whv do histones contain so many basic amino acids? Answer in no more than two sentences. Part B Given what you know about how acetylation affects lysine, why does histone lysine acetylation open chromatin? Answer in one sentence only.
Chromatin of eukaryotes is organized into repeating interactions with protein octamers called nucleosomes. Nucleosomes are composed of DNA and multiple histone proteins cohesins telomerase kinetochore proteins
Which of the following statements about nucleosomes is NOT true? DNA is on the outside and is wrapped around the histone octamer DNA is inside the nucleosome core, surrounded by a histone octamer. Histone H1 is associated with the chromatosome. Histones H2A, H2B, H3, and H4 are the core histones.
Which histone helps stabilize the solenoid structure of eukaryotic chromatin? H4 H3 H2B H2A H1
Describe the appearance and composition of chromatin and the structure of nucleosomes. Comment on the significance of histone proteins.
Instead of randomly placed DNA within the nucleus of a eukaryotic cell, it seems that regions of DNA are specifically placed in exact locations within the organelle. Which of the following would be an advantage to DNA organization within the nucleus? Organized regions of DNA within the nucleus would aid the cell specifically in preventing viruses from attaching to the DNA Specific regions in the nucleus contains high concentrations of Polymerases and Transcription Factors which would localize DNA Specific regions in the nucleus contains specific portions of DNA and the reason is not yet understood in science

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		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.