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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Textbook Question
Chapter 26, Problem 19TYK
Which of the following segments of DNA would likely have the fastest molecular clock rate?
- a. noncoding DNA that has a regulatory function
- b. a pseudogene (gene that has lost sequences needed for expression)
- c. a gene for an essential enzyme
- d. a gene for rRNA
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Students have asked these similar questions
What are the most highly-conserved regions of human DNA (when compared to similar DNA
sequences in closely-related animals)?
A. transposons
B. non-transcribed spacers
C. introns
D. pseudogenes
E. exons
We have looked at the structure of DNA in cells. There are some differences. Based on what we have learned, which of the following is TRUE?
a.
Mitochondrial chromosomal DNA is similar in structure to bacterial chromosomes.
b.
Prokaryotic chromosomes contain kinetochores whereas eukaryotic chromosomes have centromeres.
c.
All the chromosomes found in eukaryotes are linear while prokaryotic chromosomes are circular.
d.
Bacterial chromosomes have multiple origins of replication, thus allowing for short generation times, whereas eukaryotic chromosomes are replicated from a single origin.
e.
All the answers presented are TRUE.
f.
Telomeres are found on all chromosomes, both prokaryotic and eukaryotic, however only eukaryotic telomers shorten over time.
The molecule DNA is important to biological systems because
a. it can be replicated.
b. it encodes the information for making a new individual.
c. it forms a complex, double-helical structure.
d. nucleotides form genes.
Chapter 26 Solutions
Study Guide for Campbell Biology
Ch. 26 - a. In this hypothetical phylogenetic tree, which...Ch. 26 - What two complications may make it difficult to...Ch. 26 - Place the taxa (outgroup. A, B, C, and D) on the...Ch. 26 - Prob. 4IQCh. 26 - a. Give an example of genes that would be compared...Ch. 26 - Prob. 6IQCh. 26 - Prob. 7IQCh. 26 - Prob. 1SYKCh. 26 - Prob. 2SYKCh. 26 - Prob. 3SYK
Ch. 26 - Related families are grouped into the next-highest...Ch. 26 - Prob. 2TYKCh. 26 - Prob. 3TYKCh. 26 - Prob. 4TYKCh. 26 - Prob. 5TYKCh. 26 - Prob. 6TYKCh. 26 - Prob. 7TYKCh. 26 - Prob. 8TYKCh. 26 - A taxon such as the class Reptiliawhich includes...Ch. 26 - You wish to study evolutionary relationships among...Ch. 26 - Prob. 11TYKCh. 26 - Prob. 12TYKCh. 26 - Prob. 13TYKCh. 26 - Prob. 14TYKCh. 26 - Prob. 15TYKCh. 26 - Which of the following approaches would allow a...Ch. 26 - A comparative study of which of the following...Ch. 26 - Prob. 18TYKCh. 26 - Which of the following segments of DNA would...Ch. 26 - Which of the following is the best description of...Ch. 26 - Prob. 21TYK
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- 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.arrow_forwardwhich event contradicts the central dogma of molecular biology?arrow_forwardThe nucleotides from a bacterial cell were found to have the following abundances: 39% uracil; 41% adenine, 9% cytosine; 8% guanine. What type of molecule is the genome of the bacteria likely made of? a. Double stranded DNA b. Single stranded DNA c. Messenger RNA d. Double stranded RNAarrow_forward
- Which of the following statements about genes is incorrect? Select one: O a. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg. b. Genetic differences can result from changes in the DNA called mutations. O c. Genes correspond to segments of DNA. d. Under normal circumstances, each chromosome contains precisely one gene. e. Many genes contain the information needed for cells to synthesize enzymes and other proteins.arrow_forwardWhat will most likely be the effect of the change in the DNA molecule? * A. the change will cause a harmful mutation B. the DNA molecule will be unable to replicate C. the organism will be reproduce D. the DNA molecules will code for a different protein Original strand: T A C G T A T G A A G C, Mutant strand: T A G C T A T G A A G C. what type of mutation? * A. Substitution B. Deletion C. Insertion D. Nonsense Which mechanism contributes to accuracy during DNA Replication? * A. The mismatch repair system recognizes an incorrect base-pair and corrects the mistake in the non-methylated strand B. Using primers increase accuracy because the first nucleotides is a new nucleic acid chain are more like to be correct. C. all DNA polymerase have a 5'-3' exonuclease activity which can remove…arrow_forwardYou are working in the lab and have measured the size of mRNA that has been transcribed from a particular gene in your cell population. The length of the gene in the cells you are working, measured from the start to the stop sequence is 9000 nucleotides. When you measure the RNA, however, the size is only 3000 nucleotides. What do you think happened? O a. Three DNA base pairs code for one RNA nucleotide. b. mRNA does not contain exons. c. There must have been a deletion mutation in the DNA in these cells. Od. The poly-A tail is present in the DNA but not on the mRNA. Oe. RNA splicing occurred, so introns are removed in the mRNA.arrow_forward
- Define the following terms: a. A-DNA b. B-DNA c. pseudogene d. cruciform e. intronarrow_forwardA technique known as polymerase chain reaction (PCR) is able to produce millions of copies of a DNA molecule in only a few hours. Which of the following cellular processes is PCR most similar to? A. Transcription B.Translation C. Meiosis D. Replicationarrow_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_forward
- Which of the following describes sequencing by synthesis? A. Large sections of DNA are inserted into a plasmid. B. DNA sequence is recorded as the complementary strand is built. C. Many copies of the DNA are made, each terminating at a specific nucleotide. D. A DNA strand is forced through a pore and its sequence synthesized as it passes through.arrow_forwardThe diagram below shows the result of a hybridization experiment between a eukaryotic mRNA and the template strand of its gene. Which of the following statements is TRUE? a. This gene contains four exons. b. The gene’s exons are visible as unpaired DNA loops protruding from the DNA/RNA hybrid. c. The 5’ end of the RNA strand is on the right side of the drawing. d. A hybrid between a prokaryotic mRNA and its gene would result in a similar image. e. the poly-A tail of the mRNA hybridizes with a poly-T stretch in the DNA.arrow_forwardWhat might best explain why the incidence of cancer increases as people age? Select one: a. mutations accumulate as people age b. cell division increases as people age c. protein synthesis increases as people age d. telomerase activity increases as people age e. ATP production increases as people agearrow_forward
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