Genetics: From Genes to Genomes
6th Edition
ISBN: 9781259700903
Author: Leland Hartwell Dr., Michael L. Goldberg Professor Dr., Janice Fischer, Leroy Hood Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 15, Problem 2P
Assuming human cells have on average 1000 mitochondria, what percentage by weight of the total DNA isolated from human tissue would be mtDNA?
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Assuming human cells have on average 1000 mitochondria, what percentage by weight of the total DNAisolated from human tissue would be mtDNA?
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DNA is isolated from concentrated ocean water. One genome is studied, and the proportion of each nucleotide is A = 15%, C = 35%, G = 35% and T = 15%. Is this genome from a dsDNA or ssDNA organism? Explain your reasoning. Is this organism AT-rich or GC-rich?
Chapter 15 Solutions
Genetics: From Genes to Genomes
Ch. 15 - Match each numbered item with the most closely...Ch. 15 - Assuming human cells have on average 1000...Ch. 15 - Reverse translation is a term given to the process...Ch. 15 - The human nuclear genome encodes tRNAs with 32...Ch. 15 - The human mitochondrial genome includes no genes...Ch. 15 - How do you know if the halibut you purchased at...Ch. 15 - Is each of these statements true of chloroplast or...Ch. 15 - Suppose you are characterizing the DNA of a...Ch. 15 - An example of a gene-targeting DNA plasmid vector...Ch. 15 - Which of the following characteristics of...
Ch. 15 - The Saccharomyces cerevisiae nuclear gene ARG8...Ch. 15 - The so-called hypervariable regions HV1 and HV2 of...Ch. 15 - Suppose a new mutation arises in a mitochondrial...Ch. 15 - Describe at least two ways in which the...Ch. 15 - Why are severe mitochondrial or chloroplast gene...Ch. 15 - Suppose you are examining a newly found plant...Ch. 15 - A form of male sterility in corn is inherited...Ch. 15 - Plant breeders have long appreciated the...Ch. 15 - A mutant haploid strain of Saccharomyces...Ch. 15 - Prob. 20PCh. 15 - What characteristics in a human pedigree suggest a...Ch. 15 - The first person in the family represented by the...Ch. 15 - In 1988, neurologists in Australia reported the...Ch. 15 - If you were a genetic counselor and had a patient...Ch. 15 - Kearns-Sayre syndrome KSS, Pearson syndrome, and...Ch. 15 - Many clinically relevant mitochondrial diseases...Ch. 15 - Leigh syndrome is characterized by psychomotor...Ch. 15 - All mutations in mitochondrial genes ultimately...Ch. 15 - How could researchers have determined that the...
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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
- How many nucleotides does the human genome contain?arrow_forwardOne gram of cultured human cells contains about 109 cells and occupies roughly 1 mL. If the average molecular mass of a base pair is 660 daltons and each cell contains 6.4 x 109 bp, what mass of DNA is present in this one-gram sample? If all the DNA molecules in the sample were laid end to end to form a single thread, would it be long enough to reach from the Earth to the Moon (385,000 kilometers)?arrow_forwardA medium-sized human chromosome contains about 100 millionbp. If the DNA were stretched out in a linear manner, how longwould it be?arrow_forward
- There is one base pair for every 0.34 nm of DNA and the totalcontour length of all the DNA in a single human cell is 2 m.Calculate the number of base pairs in a single cell. Assumingthat there are 1014 cells in the human body, calculate the totallength of DNA. How does this estimate compare to the distance from the earth to the sun (1.5 * 108km)?arrow_forwardThe given figure shows the denaturation curves for three DNA samples. A) What is the ?m of the most GC-rich DNA sample? B) Which point represents double-stranded DNA?arrow_forwardHow do we know that DNA also serves as the genetic material in eukaryotes such as humans?arrow_forward
- If DNA concentration is 2 grams, what would be the molar concentration of human DNA in a human cell?arrow_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_forwardAn analysis is performed to determine the proportions of each of the four nucleotide bases in the DNA of several tissue samples from various species. The results appear in the table. Human Chicken Yeast E. coli % Adenine % Guanine (A) (G) 31 20 28 21 32 18 26 25 % Thymine % Cytosine (T) 30 29 33 24 Which conclusions can be drawn from this data? (C) 19 22 17 25 The proportion of G is roughly equal to the proportion of C. The proportion of A is roughly equal to the proportion of T. The proportion of pyrimidines is roughly equal to the proportion of purines. The proportion of A-T base pairs is roughly equal to the proportion of G-C base pairs.arrow_forward
- Adjacent pyrimidine bases in DNA form dimers with high efficiency after exposure to UV light. If these dimers are not repaired, skin cancers can result. Melanin is a natural sunscreen produced by melanocytes, a type of skin cell, when the skin is exposed to sunlight. Individuals who spend long periods developing a tan eventually acquire a thick and highly wrinkled skin. Such individuals are also at high risk for skin cancer. Can you explain, in general terms, why these phenomena are related?arrow_forwardA compact disc (CD) stores about 4.8 × 109 bits of information in a 96 cm2 area. This information is stored as a binary code—that is, every bit is either a 0 or a 1. how many bits would it take to specify each nucleotide pair in a DNA sequence? how many CDs would it take to store the information contained in the human genome?arrow_forwardA DNA segment has a total of 1000 nucleotides, out of which 240 of them are adenine containing nucleotides. How many pyrimidine bases does this DNA segment possess?arrow_forward
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