Pearson eText Genetic Analysis: An Integrated Approach -- Instant Access (Pearson+)
3rd Edition
ISBN: 9780135564172
Author: Mark Sanders, John Bowman
Publisher: PEARSON+
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 4P
All life shares DNA as the hereditary material. From an evolutionary perspective, why do you think this is the case?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Even though they have several differences, a bacterium and a human cell will both contain DNA. With respect to evolution, what does this fact suggest?
Cat DNA is much more similar to dog DNA than to tortoise DNA. Why? (a) Cats and dogs are both carnivores and take in similar nutrients. (b) Cats and dogs have lived together with humans for a long period of time, so they have grown more similar. (c) Cats and dogs have more offspring during their lifetime than tortoises have, so their DNA changes less rapidly. (d) Cats and dogs have a common ancestor that is more recent than the common ancestor of cats and tortoises.
When a DNA molecule is in water, each base pair releases a pair of hydrogen ions. As a result,
the DNA molecule has a net charge. Since there are a lot of base pairs in a string of DNA, this
can be a lot of charge!
On the web, find a reliable site (and say why you think it is reliable) that tells you the number of
base pairs in a typical human chromosome. (Not the Y chromosome!) To get a sense of the total
amount of charge involved, imagine that you had two coiled up chromosomes, each with a
charge of 2 extra electrons per base pair. Suppose you held them fixed in a vacuum one
micrometer apart. For simplicity, model the chromosomes as point charges.
Estimate the electric force that the two chromosomes exert on each other in this situation.
Explain why this kind of electrostatic repulsion is not a problem when DNA is in its natural
environment.
You may take the Coulomb constant to be kC ~ 9 x 109 N-m2
/C2
.
Chapter 1 Solutions
Pearson eText Genetic Analysis: An Integrated Approach -- Instant Access (Pearson+)
Ch. 1 - 1. Genetics affects many aspects of our lives....Ch. 1 - 2. How do you think the determination that DNA is...Ch. 1 - 3. A commentator once described genetics as “the...Ch. 1 - All life shares DNA as the hereditary material....Ch. 1 - Define the terms allele, chromosome, and gene and...Ch. 1 - 6. Define the terms genotype and phenotype, and...Ch. 1 - 7. Define natural selection, and describe how...Ch. 1 - Describe the modern synthesis of evolution, and...Ch. 1 - What are the four processes of evolution? Briefly...Ch. 1 - Define each of the following terms: a....
Ch. 1 - 11. Compare and contrast the genome, the proteome,...Ch. 1 - With respect to transcription describe the...Ch. 1 - Plant agriculture and animal domestication...Ch. 1 - Briefly describe the contribution each of the...Ch. 1 - If thymine makes up 21% of the DNA nucleotides in...Ch. 1 - What reactive chemical groups are found at the 5...Ch. 1 - Identify two differences in chemical composition...Ch. 1 - What is the central dogma of molecular biology?...Ch. 1 - A portion of a polypeptide contains the amino...Ch. 1 - The following segment of DNA is the template...Ch. 1 - 23. Fill in the missing nucleotides (so there are...Ch. 1 - 24. Suppose a genotype for a protein-producing...Ch. 1 - Prob. 25PCh. 1 - 26. Four nucleic acid samples are analyzed to...Ch. 1 - 27. What is meant by the term homology? How is...Ch. 1 - 28. If one is constructing a phylogeny of reptiles...Ch. 1 - 29. Consider the following segment of...Ch. 1 - 30. Ethical and social issues have become a large...Ch. 1 - 31. In certain cases, genetic testing can identify...Ch. 1 - 32. What information presented in this chapter and...Ch. 1 - 33. It is common to study the biology and genetics...
Knowledge Booster
Learn more about
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
- Is the following statement true or false?Why? “The flow of genetic information in the cell is alwaysDNA -> RNA -> protein.”arrow_forwardChimpanzees and gorillas are genetically similar, sharing more than 98 percent of their DNA. While they have many of the same body parts, the details of these body parts differ. between the two species. Chimpanzees and gorillas. have a difference of 2 percent in their DNA. sequences, but that difference represents more than 35 million base pairs that differ in the chromosomes of every cell. These base-pair changes account for the physical differences seen between the two species. One difference between the two species is the shape of their hands and feet. Figure 1 compares the hand and a foot of a chimpanzee and a gorilla. Much like a human hand, chimpanzee and gorilla hands have opposable thumbs. This adaptation is good for picking up small objects and eating with one hand. Chimpanzees have fingers that are much longer and narrower than gorillas' fingers and have thumbs that are slightly smaller and sit farther down on their palms than gorillas' thumbs do. As a result, chimpanzees'…arrow_forwardChimpanzees and gorillas are genetically similar, sharing more than 98 percent of their DNA. While they have many of the same body parts, the details of these body parts differ. between the two species. Chimpanzees and gorillas. have a difference of 2 percent in their DNA. sequences, but that difference represents more than 35 million base pairs that differ in the chromosomes of every cell. These base-pair changes account for the physical differences seen between the two species. One difference between the two species is the shape of their hands and feet. Much like a human hand, chimpanzee and gorilla hands have opposable thumbs. This adaptation is good for picking up small objects and eating with one hand. Chimpanzees have fingers that are much longer and narrower than gorillas' fingers and have thumbs that are slightly smaller and sit farther down on their palms than gorillas' thumbs do. As a result, chimpanzees' thumbs are not as fully opposable as those of gorillas. Gorillas have…arrow_forward
- Astronomers have made great strides in sending probes out to other planets and moons in our solar system. If they were to find a living creature some place other than Earth, how could DNA analysis help them better understand the organism? Explain in 1-2 sentences. B I U !!!arrow_forwardI want to genetically transform an entire organism. To accomplish this do you think it is easier to work with an organism composed of many cells, or composed of a single cell? Why?arrow_forwardWhy do we study the DNA sequence of human organism?arrow_forward
- Humans have engaged in genetic manipulation for millennia, producing plant and animal varieties through selective breeding and hybridization that significantly modify genomes of organisms. Why do you think modern genetic engineering, which often entails introducing or modifying only one or a few genes, has met with so much opposition? Should some forms of genetic engineering be of greater concern than others? Explain.arrow_forwardThe Selfish Gene is a radical theory that argues that all living creatures are essentially vehicles for their genes- hence, we all are a “survival machine" for our genes. In the light of what you have learned about the molecular structure and function of the gene, is this perspective still relevant? Cite specific biological phenomena to prove your point. References:arrow_forwardIf our DNA contains all the information about who we are, how can something that does not involve changing the gene sequence cause changes in phenotypes? Describe briefly how these changes happen.arrow_forward
- Why hybridization does not necessarily result to evolution?arrow_forwardGive your response to the following statement: “Eventually, all species become extinct. So, it does not really matter that the world’s remaining tiger species or a tropical forest plant are endangered mostly because of human activities.” Do you agree in genetic therapy? Why or why not?arrow_forwardIs gene transfer a form of eugenics? Is it advantageous to use gene transfer to eliminate some genetic disorders? Can this and other technology be used to influence the evolution of our species? Should there be guidelines for the use of genetic technology to control its application to human evolution? Who should create and enforce these guidelines?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License