Lampbrush and polytene chromosomes are characteristic because of the fact that A. nucleosomes are 3-dimensionally distinct from "normal" chromosomes B. microscopy shows they have regions with loosely bound DNA near tightly bound regions C. multiple centromeres were discovered on their linear sequence by in situ hybridization D. DNAse is unable to cleave the linkage between strand

Lampbrush and polytene chromosomes are characteristic because of the fact that A. nucleosomes are 3-dimensionally distinct from "normal" chromosomes B. microscopy shows they have regions with loosely bound DNA near tightly bound regions C. multiple centromeres were discovered on their linear sequence by in situ hybridization D. DNAse is unable to cleave the linkage between strand

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter10: Chromosomes, Mitosis, And Meiosis

Section: Chapter Questions

Problem 1TYU: A nucleosome consists of (a) DNA and scaffolding proteins (b) scaffolding proteins and histones (c)...

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Small extrachromosomal rings of DNA, often contain genes that give bacterial cells genetic advantages: * none is correct O chromatin Onucleoplasm nucleoid plasmids
A nucleosome consists of (a) DNA and scaffolding proteins (b) scaffolding proteins and histones (c) DNA and histones (d) DNA, histones, and scaffolding proteins (e) histones only
Roman 16px : 1.0pt : BIUS A A X2 x E tion of chromosomes did not occur berore cytoknESIS, 1/2 the # of chromsomes or 1 of each b. If the situation in part a occurred, would the new cells be viable? Explain. no, it wouldnt have the DNA OP 10. The S phase stands for synthesis, which means to make or build something more complex out of simpler parts. Scientists know that during the S phase DNA is being made in the nucleus of the cell. Why do you think the cell needs to make more DNA at this time in the cell cycle? 11. Refer to Model 1. The chromosomes that are shaped like "X" (made of two sister chromatids) have double the amount of DNA than the chromosomes that are shaped like "I." During what phase of the cell cycle do you think the chromosomes are replicated (copied)? POGIL Activities for High School Biology 2. hp
puey drganlsm yo are working with has the following chromosomes. Place the chromosomes of this organism onto the cell below such that the diagram accurately shows a cell from this organism in metaphase of mitosis. Note 1: Only place chromosomes you need. You don't need them all. Note 2: You can place the 'Blank Box' image if you don't think you need a chromosome at a particular position. Dashed line - the metaphase plate 1.
The DNA fragments show a portion of two nonsister chromatids before crossover. Suppose strand invasion occurs between regions A and B. The heteroduplex extends and forms the Holliday intermediate shown below right. Each dotted line represents one potential plane on which endonucleases could cut the intermediate. DEDE Left chromatid A Right chromatid b A B D Nonsister chromatids before crossover Holliday intermediate Match the chromatids that result from the different ways in which the Holliday intermediate can be resolved. Top chromatid B D Bottom chromatid
In the following image, A and B are and chromosomes E F A B Replication Centromere O Unreplicated, homologous O Replicated, homologous O Unreplicated, different O Replicated, different
Shade A if it is True and B if it is False A. True B. False 24. Every phosphate is connected to a sugar 25. Uracil is present in RNA replication 26. 2 haploid cell is the end product of DNA replication 27. Complimentary base pairing is compose of 7 nucleotides 29. New strands are copied and formed from separated strands of DNA 30. 3' to 5' end, 5' to 3' end are the directionality of DNA strands
Classifiation of Llfe A new organism was discovered in a deep sea vent at the bottom of the ocean. The researchers collected the sample and made careful observations of it. The picture at right shows a microscopic image captured at 1000X its actual size. Below are some other observations made: • When DNA was isolated from the cell, it was mixed with an equal portion of histone proteins • There are no visible organelles present inside the cell • The specimen seem to die in the presence of oxygen • Able to live in conditions that mimic deep sea vents without any external food source provided Based on these observations, determine each of the following and provide a clear rationale. A) To which domain would you assign this organism? Why? B) Propose a hypothesis of how they obtain nutrients. Are these most likely autotrophs or heterotrophs? Provide a rationale.
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Drag the terms to their matching descriptions to review characteristics of eukaryotic chromosomes. (Note that not all t match.) shugoshin G bands kinetochore phenocopy FISH YAC telomerase nucleosome histone chromatin Reset ARS An artificial chromosome created by combining centromeres, telomeres, and origins of replication from yeast. Origin of replication in yeast. A fluorescent DNA probe hybridizes to chromosomal DNA on a slide to locate a sequence in the genome. Regions of a chromosome that are distinguished by staining differences when treated with Giemsa stain. A beadlike structure consisting of DNA wound around histone proteins. Complexes of DNA and protein located in the eukaryotic nucleus. Enzyme that elongates specific repetitive sequences at the ends of linear chromosomes. Protein that protects cohesin of the centromere region from cleavage during meiosis I. A specialized structure composed of DNA and proteins that is the site at which chromosomes attach to the spindle fibers.
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