Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 21, Problem 15TYK
Compared to genes in mice and chimpanzees, most rapidly evolving human genes code for
- a. α- and β-globin.
- b. lysozyme.
- c. transcription factors.
- d. ribosomal RNAs.
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Consider the genes that specify the structure of hemoglobin. Arrange the following events in the most likely sequence in which they would take place.a. Anemia is observed.b. The shape of the oxygen-binding site is altered.c. An incorrect codon is transcribed into hemoglobinmRNA.d. The ovum (female gamete) receives a high radiationdose.e. An incorrect codon is generated in the DNA of ahemoglobin gene.f. A mother (an X-ray technician) accidentally stepsin front of an operating X-ray generator.g. A child dies.h. The oxygen-transport capacity of the body is severelyimpaired.i. The tRNA anticodon that lines up is one of a typethat brings an unsuitable amino acid.j. Nucleotide-pair substitution occurs in the DNA of agene for hemoglobin
Which of the following is true about the three major classes of RNAs in the cell: mRNAs, tRNAs, and rRNAs?
A. mRNAs encode polypeptide chains.
B. tRNAs are structural components of the ribosome.
C. rRNAs are adapter molecules that translate the information on an mRNA into a polypeptide sequence.
D. mRNAs can also encode tRNAs and rRNAs.
With the exception of retroviruses, the direction of transfer of genetic information in all living things is as follows:
A.
pRNA--> DNA--> mRNA--> protein.
B.
DNA--> tRNA--> protein
C.
protein--> DNA--> mRNA
D.
DNA--> mRNA--> protein
Chapter 21 Solutions
Study Guide for Campbell Biology
Ch. 21 - In what ways would third-generation sequencing be...Ch. 21 - Prob. 2IQCh. 21 - Refer to the organisms listed in Table 21.1 in...Ch. 21 - Explain why retrotransposons always move by the...Ch. 21 - For each of the following types of DNA sequences...Ch. 21 - Prob. 6IQCh. 21 - Prob. 7IQCh. 21 - If all Hox genes contain the same or very similar...Ch. 21 - About 25% of the human genome relates to the...Ch. 21 - Prob. 2SYK
Ch. 21 - Which of the following has decreased the time and...Ch. 21 - Prob. 2TYKCh. 21 - In the process called gene annotation, computer...Ch. 21 - Prob. 4TYKCh. 21 - Prob. 5TYKCh. 21 - Prob. 6TYKCh. 21 - What is a pseudogene? a. a gene that has been...Ch. 21 - Prob. 8TYKCh. 21 - Which of the following is common to both...Ch. 21 - Prob. 10TYKCh. 21 - Prob. 11TYKCh. 21 - Prob. 12TYKCh. 21 - Prob. 13TYKCh. 21 - Prob. 14TYKCh. 21 - Compared to genes in mice and chimpanzees, most...
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