ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 24.1, Problem 4CC
Summary Introduction
To explain:
The reason how the genetic information flows from the RNA to DNA in the changing RNA world and whether such a flow occurs today.
Concept introduction:
The primitive life present on the earth contained RNA with self-enzymatic activity. The
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
If RNA played a key role in the origin of life,why do cells now use DNA for information storage and proteins to carry out other cellular processes?
In the context of chemical evolution, DNA's structure is interesting because it suggests a possible copying mechanism. What about DNA's structure facilitates copying?
A.
The strands of the double helix are complementary.
B.
DNA always goes from 5' to 3'.
C.
It has the same number of purines and pyrimidines.
D.
The nitrogenous bases are located on the inside of the double helix.
Models of real-world phenomena can reveal important links between structure and function in biology. Describe how the structure of DNA revealed by theWatson and Crick model suggests how it functions in living things.
Chapter 24 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 24.1 - What hypothesis did Miller test in his classic...Ch. 24.1 - How would the appearance of protocells have...Ch. 24.1 - Prob. 3CCCh. 24.1 - Prob. 4CCCh. 24.2 - Contrast the cellular and DNA structures of...Ch. 24.2 - Distinguish between the four major modes of...Ch. 24.2 - Prob. 3CCCh. 24.2 - Prob. 4CCCh. 24.3 - Although rare on a per gene basis, new mutations...Ch. 24.3 - Distinguish between the three mechanisms by which...
Ch. 24.3 - In a rapidly changing environment, which bacterial...Ch. 24.3 - WHAT IF? If a nonpathogenic bacterium were to...Ch. 24.4 - Explain how molecular systematics and metagenomics...Ch. 24.4 - WHAT IF? What would the discovery of a bacterial...Ch. 24.5 - Explain how prokaryotes, though small, can be...Ch. 24.5 - Prob. 2CCCh. 24.5 - Prob. 3CCCh. 24.5 - Prob. 4CCCh. 24 - Which of the following steps has not yet been...Ch. 24 - Fossilized stromatolites A. more than 2.8 billion...Ch. 24 - Prob. 3TYUCh. 24 - Photoautotrophs use A. light as an energy source...Ch. 24 - Which of the following statements is not true? A....Ch. 24 - Prob. 6TYUCh. 24 - Prob. 7TYUCh. 24 - SCIENTIFIC INQUIRY INTERPRET THE DATA The...Ch. 24 - FOCUS ON EVOLUTION In patients infected with...Ch. 24 - FOCUS ON ENERGY AND MATTER In a short essay (about...Ch. 24 - Prob. 11TYU
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
- Give the biological information in DNA generate an enormous diversity of living organisms?arrow_forwardDetermine whether ribosomal RNA genes were "born" perfect.arrow_forwardImagine that all six of the key players in the discovery of the structure of DNA had agreed to work together from the start. How do you think the processarrow_forward
- In a discussion about the origin of life, one student argued that RNA molecules must have come before DNA molecules. What is the most likely rationale for this argument? RNA can both store genetic information and catalyze chemical reactions, which are necessary for self-replication. RNA is more stable than DNA, making it more suitable for early life forms. RNA can replicate faster than DNA, enabling rapid evolution. RNA can translate genetic information into proteins, whereas DNA cannot.arrow_forwardExplain and elaborate on the new DNA chain of a daughter DNA double helix and the old DNA chain in the other daughter DNA double helix and its relationship?arrow_forward→ 읊 https://openvellum.ecollege.com/course.html?courseld-15183778&HepID=fb9c...☆ @ Pearson Copyright O 2019 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy Permissions I Contact Usarrow_forward
- A fairly conserved gene is compared between a human, a chimpanzee, a bear and a banana. How would you expect their DNA sequences to relate?arrow_forward1. What are the 4 crucial characteristics of genetic material? Briefly describe how why each characteristic is applicable to DNA. 2. The following questions are about gene transcription and translation. a. Use the nucleotide sequence TGA CTA ACG GCT, transcribe into mRNA, and translate into a protein. b. Using this sequence, give an example of a synonymous, a non- synonymous and indel mutation. c. Which will have the biggest impact on protein evolution?arrow_forwardCompare a picture of a structure of Human DNA and Bacterial DNA, are they similar?arrow_forward
- 1. How many genes are needed to sustain life?2. Using a flow diagram, trace the history of the discovery of the DNA as the genetic material?3. Following Chargaff’s rule, what is the percent concentration of other nitrogenous bases if the concentration of Adenine is 21%?4. In the double helix model of DNA by Watson and Crick, what is the distance between successive bases and how many base pairs will complete one full turn?5. Based on literature, the number of genes in the human genome is lower compared to rice but rice have fewer chromosomes and lesser amount of DNA than humans. What is the main reason for this difference in the DNA-gene ratio?6. What are introns? Where are they located in the DNA?7. What are exons? What is their function?8. What proportion in the human genome are actual genes?9. What sequences form most of the human genome? What is their significance in the expression of genes?10. What are tandem repeats?arrow_forwardA researcher sequences the genome of a variety of bacterial and eukaryotic cells. She finds that the bacterial genome is smaller, but that there are more genes for a given number of base pairs in the eukaryotic cells. In other words, there are fewer genes per unit of length of DNA in the eukaryotic cells. What do you predict she will find if she examines the DNA more closely? A. All of the bacterial DNA consists of coding sequences, but this is not true of the eukaryotic DNA. B. There are more repetitive sequences in the eukaryotic DNA than in the bacterial DNA. C. There are densely packed genes in the eukaryotic DNA that were not immediately distinguishable during the first analysis. D. The bacteria have larger quantities of noncoding DNA than the eukaryotic cells.arrow_forwardShown below is a DNA coding strand. A base (*G*) mutates to Adenine (A). What will be the resulting amino acid sequence as a result of the mutation? What type of mutation occured? Hint: Determine the template, then first determine the amino acid sequence before the mutation, and then determine the amino acid sequence after the mutation. Show how you got your answer. 5' T-A-C-T-T-C-C-A-*G*-C-C-G-C-T-C 3'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 Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
DNA vs RNA (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=JQByjprj_mA;License: Standard youtube license