2. A diploid human cell contains approximately 6.4 billion base pairs of DNA. a. How many nucleosomes are present in such a cell? (Assume that the linker DNA between each nucleosome encompasses 40 bp.) 6.4 billion base pairs / (147 base pairs + 40 base pairs) = ~43 million nucleosomes. b. How many histone proteins are complexed with this DNA?

2. A diploid human cell contains approximately 6.4 billion base pairs of DNA. a. How many nucleosomes are present in such a cell? (Assume that the linker DNA between each nucleosome encompasses 40 bp.) 6.4 billion base pairs / (147 base pairs + 40 base pairs) = ~43 million nucleosomes. b. How many histone proteins are complexed with this DNA?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter19: Genomes And Proteomes

Section: Chapter Questions

Problem 12TYK

See similar textbooks

Similar questions

A diploid human cell contains approximately 6.4 billion base pairs of DNA. Q. How many nucleosomes are present in such a cell? (Assume that the linker DNA encompasses 40 bp.)
A typical eukaryotic chromosome found in humans contains about100 million bp. one DNA base pair has alinear length of 0.34 nm.A. What is the linear length of the DNA in a typical human chromosome in micrometers?B. What is the linear length of a 30-nm fiber of a typical humanchromosome?C. Based on your calculation in part B, would a typical humanchromosome fit inside the nucleus (with a diameter of 5 µm) ifthe 30-nm fiber was stretched out in a linear manner? If not,explain how a typical human chromosome fits inside thenucleus during interphase.
4b) What is the functional difference between heterochromatin and euchromatin? In other words, what can a cell do (or not do) with euchromatic DNA but not heterochromatic DNA?
13. please answer, i'll give thumbs up
3. Consider the following diagrams representing three different DNA molecules. (a) 5' 3 3' 5' (b) 5' 3' 5' (c) 3' 5' Assuming that DNA polymerase is the only enzyme present and that there is no additional DNA, state whether each of these (= molecules can serve as a substrate for DNA synthesis. Give reasons as to why or why not.
A. DNA Replication Construct a DNA with 15 base pairs. (Note that the first three nucleofides of the parent DNA (3' to 5') strand correspond to a start codon and its last three nucleotides correspond to a stop codon in its MRNA counterpart later on.) Write it down as follows: a. the sequence of parent DNA (template) 3' A C A TT 5' 3' Upon undergoing DNA replication, show what one daughter DNA molecule will look like. Write it down as follows: b. the sequence of DNA Daughter 1: 3' 5' 5' 3' C. the sequence of DNA Daughter 2: 3' 3' 5' in in
29.) equalities now called Chargaff's rule. Biochemist Erwin Chargaff was the first to note that, in DNA, [A]=[T] and [G]=[C], A) Using this rule, determine the percentages of all the bases in DNA that is 20% thymine. [A] = [C] = [G] [T] = 20% %3D - B) If a single strand of RNA is 20% uracil, what can you predict about the percentages of the remaining bases and why?
14. For the diagram at right, please label the following words on the diagram. (A) Deoxyribose (sugar), (B) Phosphate, and (C) Nitrogenous Base. 15. Based on the definition, how many nucleotides do you see in this diagram? 16. What are the four different types of bases in DNA and how do they pair? 17. When studying heredity, what is the relationship of DNA bases and traits?
The DNA of a skin sell and a muscle cell are identical. But the skin cell may contain the proteins collagen and keratin in high amount, which the muscle lacks (or has very little of), while the muscle cell may have large amounts of the proteins actin and myosin, which the skin cell lacks (or has very little of). Explain this apparent contradiction.
On the 4 diagrams below show the four different ways (which strands are cut and where for each Holliday junction) that the Holliday junction structures can be resolved and denote whether this leads to a recombination event or not." 3 1 IT |? 3 ||| |AL||T|||c| |||| 4 5 6 TIT!!T?L|| ?|||?| |||| TIT|| |AL||T|||C| |||| 4 5 6 3 3' 3 T?L|| ?| ||?| |!!! || |A|||T| |jcj ||| 4 5 6 TI T?L|| ?|||?T ||| jT|| |ALİ|Ti||c| ||| 4 5 6
. While studying the structure of a small gene that was recently sequenced during the Human Genome Project, an investigator notices that one strand of the DNA molecule contains the following: 20 adenine (A) bases 30 cytosine (C) bases25 guanine (G) bases 22 thymine (T) bases How many of each base is found in the complete double-stranded molecule?
Histone proteins contain tail amino acids that are positively charged. Which of the following characteristics of DNA would best support tight interactions between DNA and histones? O A. DNA 5' and 3' ends have negative charge responsible for stabilizing interactions with histones O B. the DNA backbone has a net negative charge that is attracted to the histones O .the minor groove in DNA fits around the spherical shape of the histones O D. the histone octamer is attracted to the deoxyribose in DNA