Don't use Ai.Answer in all options with explanation. Sites in eukaryotic chromatin that are preferentiallydigested with DNAsel, correspond to DNA regionsthat are:Group of answer choiceshighly condensed with histonesat the end of chromosomesundergoing splicingattached to the kinetochoremostly free of histones

1. Highly condensed with histonesExplanation: Usually, the DNA regions that are highly condensed…

Answered: Sites in eukaryotic chromatin that are…

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter2: Cells And Cell Division

Section: Chapter Questions

Problem 4QP: Define the following terms: a. chromosome b. chromatin

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Define the following terms: a. chromosome b. chromatin
Discuss the levels of chromosomal organization with reference to the following terms: a. nucleotide b. DNA double helix c. histones d. nucleosomes e. chromatin
With regard to thickness and length, what do you think chromosomes would look like if you microscopically examined them during interphase? How would that compare with their appearanceduring metaphase?
The molecular mechanism of SCE is similar to homologousrecombination between homologs except that the two segmentsof DNA are sister chromatids instead of homologous chromatids.If branch migration occurs during SCE, will a heteroduplex beformed? Explain why or why not. Can gene conversion occurduring sister chromatid exchange?
Look at the two yeast colonies in Figure Q4–3. Eachof these colonies contains about 100,000 cells descendedfrom a single yeast cell, originally somewhere in the mid-dle of the clump. A white colony arises when the Ade2 geneis expressed from its normal chromosomal location. Whenthe Ade2 gene is moved to a location near a telomere, itis packed into heterochromatin and inactivated in mostcells, giving rise to colonies that are mostly red. In theselargely red colonies, white sectors fan out from the middleof the colony. In both the red and white sectors, the Ade2 gene is still located near telomeres. Explain why white sec-tors have formed near the rim of the red colony. Based onthe patterns observed, what can you conclude about thepropagation of the transcriptional state of the Ade2 genefrom mother to daughter cells in this experiment?
List in each blank the description of events associated with each stage of mitosis in addition to the preparatory stage Interphase. Some events and structures occur only in plant cells and some in animal cells. Mark these events in the list with an asterisk.
When the DNA of a human cell becomes damaged, the p53 geneis activated. What is the general function of the p53 protein?Is it an enzyme, transcription factor, cell-cycle protein, orsomething else? Describe three ways in which the synthesisof the p53 protein affects cellular function. Why is it beneficialfor these three things to happen when a cell’s DNA hasbeen damaged?
What types of genetic activities occur during interphase? Explainwhy these activities cannot occur during M phase.
The term heterochromatin refers to heavily condensed regions of chromosomes that are largely devoid of genes. Since few genes exist there, these regions almost never decondense for transcription. At what point during the cell cycle would expect to observe decondensation of heterochromatic regions? Why?
The plant Haplopappus gracilis has a 2n of 4. A diploid cellculture was established and, at premitotic S phase, aradioactive nucleotide was added and was incorporatedinto newly synthesized DNA. The cells were then removed from the radioactivity, washed, and allowed to proceed through mitosis. Radioactive chromosomes or chromatids can be detected by placing photographic emulsionon the cells; radioactive chromosomes or chromatids appeared covered with spots of silver from the emulsion.(The chromosomes “take their own photograph.”) Drawthe chromosomes at prophase and telophase of the firstand second mitotic divisions after the radioactive treatment. If they are radioactive, show it in your diagram. Ifthere are several possibilities, show them, too.
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
What difference exists between the compaction of chromosomes during metaphase versus interphase? Give at least one reason why this difference may be necessary.

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Sites in eukaryotic chromatin that are preferentially digested with DNAsel, correspond to DNA regions that are: Group of answer choices highly condensed with histones at the end of chromosomes undergoing splicing attached to the kinetochore mostly free of histones