GENETIC ANALYSIS: AN INTEG. APP. W/MAS
2nd Edition
ISBN: 9781323142790
Author: Sanders
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 11, Problem 10P
What are the two or three most essential components of a bacterial chromosome sequence? Of a eukaryotic chromosome sequence? Thinking in an evolutionary context, devise an argument to explain why these components are present.
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Which of the following statements accurately describes the usual structure of a eukaryotic
chromosome?
Select one:
O It is constructed as a series of nucleosomes wrapped around two DNA molecules.
O It is composed of a single strand of DNA.
O It is a single linear molecule of double-stranded DNA plus proteins.
O It has different numbers of genes in different cell types of an organism.
A diploid (ie, contains TWO sets of chromosomes) organisms with a 45,000-kb haploid (counts only one set of its chromosomes) genome contains 21% G residues. Calculate the number of A, C, G< and T residues in the DNA of each cell in this organism.
Can you help explain why this is the answer, thank you!
Answer: Since the haploid genome contains 21% G, it must contain 21% C (Because G=C) and 58% A + T, or 29% A and 29% T. Each cell is a diploid, containing 90,000 kb or 9x10^7 bases. Therefore, A=T = (0.29)(9x10^7) = 2.61 x 10^7 bases and G=C=(0.21)(9x10^7) = 1.89x10^7 bases.
The analysis of individual nucleosomes reveals that each unit contained one copy of each protein and that the short linker DNA contained no protein bound to it. If the entire chromosome consists of nucleosomes (discounting any linker DNA), how many are there, and how many total proteins are needed to form them?
Chapter 11 Solutions
GENETIC ANALYSIS: AN INTEG. APP. W/MAS
Ch. 11 - Prob. 1PCh. 11 - Prob. 2PCh. 11 - Bacterial DNA is compacted by two principal...Ch. 11 - 10.2 The human genome contains contains base...Ch. 11 - 10.1 Give descriptions for the following...Ch. 11 - 10.4 Describe the importance of light and dark G...Ch. 11 - In eukaryotic DNA, Where are you most likely to...Ch. 11 - Prob. 8PCh. 11 - Human late prophase karyotypes have about 2000...Ch. 11 - 10. What are the two or three most essential...
Ch. 11 - Prob. 11PCh. 11 - Prob. 12PCh. 11 - A researcher interested in studying a human gene...Ch. 11 - Prob. 14PCh. 11 - 10.11 In what way does position effect variegation...Ch. 11 - 16. What are chromosome territories, and what...Ch. 11 - Prob. 17PCh. 11 - Prob. 18PCh. 11 - 10.18 A survey of organisms living deep in the...Ch. 11 - A eukaryote with a diploid number of 2n=6 carries...Ch. 11 - The accompanying chromosome diagram represents a...Ch. 11 - Suppose the genome of a bacterium contains a...Ch. 11 - DNaseI cuts DNA that is not directly associated...Ch. 11 - 10.17 Histone protein isolated from pea plants...Ch. 11 - 25. The molecular probes used in FISH can detect...Ch. 11 - Experimental evidence demonstrates that the...Ch. 11 - Prob. 27PCh. 11 - Genomic DNA from the nematode worm...Ch. 11 - What function do histone proteins perform in...Ch. 11 - Based on discussions of specific proteins and...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- If DNA analysis of a gene shows it has 20% adenine (A), what percent of the other bases does it have? Cytosine (C): Guanine (G): Thymine (T): Uracil (U): 6. Now for a sense of size. Rank the following from smallest (1) to largest (6): gene, cell, chromosome, atom, nucleus, nucleotidearrow_forwardBacteria are prokaryotic cells, i.e., they do not have a membrane-delimited nucleus. Eukaryotes have cells with a delimited nucleus. Where in these types of cells can DNA be found?arrow_forwardWhat does polycistronic mean? For RNA or ribosomesarrow_forward
- One of the following is a characteristic of eukaryotic genetic material? 1. Eukaryotic genetic material is compacted by wrapping the double-helix around histone proteins to form nucleosomes. 2. Eukaryotic genetic material consists of supercoiled circular DNA molecules complexed with proteins into chromosomes. 3. Eukaryotic genetic material consists of relaxed linear DNA molecules complexed with RNA into a 30 nm fiber. 4. Eukaryotic genetic material is compacted by folding linker regions around non-histone proteins to form a scaffold.arrow_forwardWhat observations are consistent with the conclusion that DNA serves as the genetic material in eukaryotes? Select the four correct statements. a. DNA content and ploidy in various cell types( sperm and somatic cells) are related b. DNA is found to be the only macromolecule in eukaryotes that has different subunits. c. Gene transfer is a direct evidence as it has been facilitated by recombinant DNA techniques. d. The correlation of the action and absorption spectra of ultraviolet light support the interpretation that DNA is a genetic material. e. DNA is shown to be present in ribosomes, matrix, and nucleus, where genetic function is performed. f. DNA is shown to be present in mitochondria, chloroplasts, and nucleus, where genetic function is performed.arrow_forwardGiven the following eukaryotic DNA strand, transcribe and translate the DNA into apolypeptide using the 3’ – 5’ strand as the template. You may use drawings, diagrams,colours and annotations to describe how the DNA strand will be synthesized into afunctional protein. (KEY: The letters SBMD are “made up” nucleic acids that depict non-coding regions in theDNA, hypothetically S pairs with B and M pairs with D).2.2. Describe what are missense mutations and its effects on structure and function usinghaemoglobin as an example (8).5’ - TATAAAAASSMSBMDATGSBDCCMBDBAATBSMDSTGTGTCCTMSBAG – 3’arrow_forward
- Describe the structure of nucleosome ( please keep it short as much as you can ) .arrow_forwardWhat makes up the protein component of nucleosome core (the "bead" that the DNA is wrapped around)?arrow_forwardA part of a sequenced chromosome has the sequence (on one strand)ATTGCATCCGCGCGTGCGCGCGCGATCCCGTTACTTTCCG. Which part of thissequence is most likely to take up the Z conformation?arrow_forward
- What is a genome? Describe the following terms/structures as they pertain to a eukaryotic genome: diploid, haploid, gamete, homologous chromosomes, locus, and genesarrow_forwardWhy sequences are important for chromosome structure ?arrow_forwardConsider the following DNA molecule (shown in the picture) and assume this is the DNA sequence of the entire chromosomes. list the amino acid sequences of the possible protein or proteins that could be produced from this DNA sequence what would be the DNA sequence of a sister chromatid generated from this chromosome sequence? (specify the 5' nd 3' ends)arrow_forward
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