Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 11.3, Problem 2R
Summary Introduction
To review:
The different levels of packing of the linear DNA during the prophase.
Introduction:
The human DNA (deoxyribonucleic acid) is around 2 meters long if put end to end, but it fits inside a very small nucleus. This is achieved by extensive packing of the DNA. This packing is done with the help of positively charged proteins that are known as the histones. The histone proteins contain a high amount of arginine and lysine residues.
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Chapter 11 Solutions
Life: The Science of Biology
Ch. 11.1 - Prob. 1RCh. 11.1 - Prob. 2RCh. 11.1 - Prob. 3RCh. 11.2 - Prob. 1RCh. 11.2 - Prob. 2RCh. 11.2 - Prob. 3RCh. 11.2 - Prob. 4RCh. 11.3 - Prob. 1RCh. 11.3 - Prob. 2RCh. 11.3 - Prob. 3R
Ch. 11.3 - Prob. 4RCh. 11.3 - Prob. 5RCh. 11.4 - Prob. 1RCh. 11.4 - Prob. 2RCh. 11.4 - Prob. 3RCh. 11.4 - Prob. 4RCh. 11.5 - Prob. 1RCh. 11.5 - Prob. 2RCh. 11.5 - Prob. 3RCh. 11.5 - Prob. 4RCh. 11.6 - Prob. 1RCh. 11.6 - Prob. 2RCh. 11.6 - Prob. 3RCh. 11.7 - Prob. 1RCh. 11.7 - Prob. 2RCh. 11.7 - Prob. 3R
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- What is a complex of proteins that folds up the telomeres into a structure that shields single-stranded TTAGGG sequences from nucleases and NHEJ enzymes?arrow_forwardIf the bandicoot genome is 3.62 x 109 base pairs, and the "highly repetitive DNA" fraction is composed entirely of copies of sequence 5'TGCGTGTGTGC3' and its complement, how many copies of this sequence are present in the bandicoot genome?arrow_forwardWhat are the roles of the core histone proteins versus the role of histone H1 in the compaction of eukaryotic DNA?arrow_forward
- What is meant by the term semiconservativereplication? What are the functions of DNA Pol I and III,helicase, and primase? How does a leading strand differfrom a lagging strand?arrow_forwardWhat is constitutive heterochromatin?arrow_forwardDuring the resolution of the two Holliday junctions, how many strands of DNA in total are broken during this process? Does the number differ depending on if this leads to recombination or non-recombination?”arrow_forward
- How are deoxyribonucleoside triphosphates (precursors of daughter DNA strands) and ribonucleoside triphosphates (precursors of RNA strand) differ from each other?arrow_forwardWhat is the difference between facultative and constitutive heterochromatin?arrow_forwardWhat are cis-acting DNA elements ?arrow_forward
- Which complementary base pair, G-C or A-T, would be hardest to break apart when a double-strandedDNA helix unwinds during cellular processes?arrow_forwardWhat is an Okazaki fragment? In which strand of replicating DNA are Okazaki fragments found? Based on the properties of DNA polymerase, why is it necessary to make these fragments?arrow_forwardHow many different 8-mer sequences of DNA are there?arrow_forward
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