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 21, Problem 3IQ
Refer to the organisms listed in Table 21.1 in your text to answer the following questions.
- a. Which organism has the highest gene density? _____ the lowest gene density? _____
- b. Which organism has the largest number of genes? _____ the smallest number? _____
- c. Which organism has the largest haploid genome size? _____ the smallest genome size? _____
- d. What is the estimated number of genes in the human genome? Explain the fact that there are many more different polypeptides than genes.
Table 21.1 Genome Sizes and Estimated Numbers of Genes*
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Compare and contrast the following terms: a. Eukaryotic and prokaryotic cells b. Gene and allele c. Genotype and phenotype d. DNA and RNA e. DNA and chromosome
The diagram below represents single-celled
organism A dividing by mitosis to form cells B andC.
B
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Cells A, B, and C all produced protein X. What can
best be inferred from this observation?
A) The gene to produce protein X was passed from
cell A to cells B and C.
B) Cells A, B, and C ingested food containing the
gene to produce protein X.
C) The gene for protein X is found in single-celled
organisms, only.
D) Protein X is found in all organisms.
________________________, but not ________________________ have genomes with a great deal of repetitive DNA that does not appear to encode functional genes.a) Prokaryotes, eukaryotesb) Eukaryotes, prokaryotesc) Mammals, reptilesd) Plants, animalse) Animals, plants
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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- What is the genetic phenomenon by which, two individuals carrying the same allele causing a disease do not express the same symptoms (phenotype)? Use the editor to format your answer Iarrow_forwardWhat are the answers to the following images and use evidence to support your answer?arrow_forwardUse the labels on the left to complete the image below. The answer dock above the arrow indicates the process that would change the chromosomes in a cell from the left side of the arrow to the right side. Some labels will be used more than once. Others will not be used. DNA replication HI Mitosis a b. Fertilization C C Homologous pair Replicated chromosome D. D Unreplicated chromosome F f F Meiosis Sister chromatid 24 of 40 Next > < Prev 36°F W (0)arrow_forward
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- In the cancer gene detection lab, a restriction enzyme is added to the p53 genes taken from different locations in the person's body; this restriction enzyme cuts at the location of the mutation (if there is one present). When the enzyme is added to the p53 genes from the tumor, this will result in ____ fragments, and _____ bands on an electrophoresis gel when the DNA fragments separate out.arrow_forwardConsider the diagram below and answer the following questions: The image shows [Select] chromosome(s). • How many chromosomes are shown in the image? [Select] Which term best describes what is shown by the bracket labeled "a"? [Select] D If the image does not load, make sure you are using Chrome and then refresh your browser.arrow_forwardWhich of the following statements is true? a. Linear chromosome structures observed in a karyotype are actually pairs of sister chromatids. b. Prokaryotic and eukaryotic cells divide through binary fission. c. Because chromosomes of prokaryotes are smaller than eukaryotic chromosomes, prokaryotic nuclei are also smaller. d. The genetic information found in a eukaryotic chromosome makes up the cell's entire genome.arrow_forward
- Answer each of the following questions correctly. a. How PCR may be used for the detection of disease–causing pathogens in a population during COVID Pandemic. For example: It may be used to check if a patient has a COVID virus infection. b. How cloning and expression of certain genes allows for massive production of the desired product. For example: the cloning and expression of insulin in bacteria allows for the mass production of this necessary protein for use by diabetic patients.arrow_forwardGo to the NCBI’s website at https://ncbi.nlm.nih.gov On the database dropdown menu, select “Gene” and search for “RB1.” The first entry should be on the Homo sapiens version; click the gene name. Use the information to answer the following: What is the chromosomal location of RB1? Scroll down to the “Expression” data. List 2-3 examples of normal tissues that typically express the RB1 gene. Would you say that RB1 expression is very specific or general within tissues? Scroll down to the “NCBI Reference Sequences (RefSeq)” section. Click on the “GenBank” link under NG_009009.1 RefSeqGene. This will take you to the genomic sequence of RB1. How many nucleotides long is the full-length RB1 gene? Return to the RefSeq section in the Gene Database for RB1 (back click once from where you were for part c). Click on the link under “mRNA and Protein(s)” listed as NM_000321.3. This will take you to the mature mRNA sequence data: How many bases long is the full-length RB1 mRNA transcript? Scroll…arrow_forwardProtein synthesis is the process of building a phenotype from a genotype. In 100-200 words explain how knowledge of this process helps us to understand how variation is created and expressed. You will want to refer to specific steps in the process.arrow_forward
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