ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Chapter 18, Problem 6TYU
FOCUS ON EVOLUTION
Genes important in the embryonic development of animals, such as homeobox-containing genes, have been relatively well conserved during evolution; that is, they are more similar among different species than are many other genes. Explain why.
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Chapter 18 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 18.1 - Prob. 1CCCh. 18.2 - Prob. 1CCCh. 18.2 - Explain the advantage of the systems biology...Ch. 18.2 - Prob. 3CCCh. 18.3 - The best estimate is that the human genome...Ch. 18.3 - Prob. 2CCCh. 18.3 - Prob. 3CCCh. 18.4 - Discuss the characteristics of mammalian genomes...Ch. 18.4 - Which of the three mechanisms described in Figures...Ch. 18.4 - Prob. 3CC
Ch. 18.5 - Describe three examples of errors in cellular...Ch. 18.5 - Prob. 2CCCh. 18.5 - Prob. 3CCCh. 18.6 - Would you expect the genome of the macaque (a...Ch. 18.6 - Prob. 2CCCh. 18 - Prob. 1TYUCh. 18 - Prob. 2TYUCh. 18 - Two eukaryotic proteins have one domain in common...Ch. 18 - DRAW IT Comparing amino acid sequences of similar...Ch. 18 - SCIENTIFIC INQUIRY The scientists mapping human...Ch. 18 - FOCUS ON EVOLUTION Genes important in the...Ch. 18 - FOCUS ON INFORMATION The continuity of life is...Ch. 18 - SYNTHESIZE YOUR KNOWLEDGE Insects have three...
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- Human Genome ProjectIn 2003, the Human Genome Project was successfully completed, determining the exact sequence of the entire human genome, which is made up of 3 billion nucleotide base pairs. The data generated from the Human Genome Project is freely available online to anyone. Many pieces of research and innovations stemmed from the HGP, allowing the identifications of 1 800 disease genes. Many of the corporations using the results from the HGP are privately funded, and research is being done for profit even though the HGP results are provided freely. Identify one advantage and one disadvantage of corporate funding and patenting genetic research results.arrow_forwardI need help pleasearrow_forwardHuman Genome ProjectIn 2003, the Human Genome Project was successfully completed, determining the exact sequence of the entire human genome, which is made up of 3 billion nucleotide base pairs. The data generated from the Human Genome Project is freely available online to anyone. Many researches and innovations stemmed from the HGP, allowing the identifications of 1 800 disease genes. Many of the corporations using the results from the HGP are privately funded, and research is being done for profit even though the HGP results are provided freely.Identify one advantage and one disadvantage of corporate funding and patenting genetic research results.arrow_forward
- Concept 23. A gene is a discrete sequence of DNA nucleotides. This concept describes the discovery of the DNA sequencing technique that made modern biology and bioinformatics possible. The method was later used to sequence the human genome and genomes of many other organisms. This led to the accumulation of great numbers of nucleotide and protein sequences in the numerous databases. The concept 23 web page is here: http://www.dnaftb.org/23/ After reading the Concept page, answer the following questions. What was the Mendel’s definition of a gene? How was it different from the definition by Beadle and Tatum? Describe proteins based on the early sequencing efforts. What was the definition of a protein coding gene based on the genetic code? What are the beginning and ending codons of the gene’s protein coding sequence? What is the name of the method that makes use of a “defective” DNA nucleotide? After reviewing the Animation pages, answer the following…arrow_forwardMammals are anatomically and physiologically more complex than roundworms, yet both organisms have approximately the same number of genes, about 20,000. Some biologists have argued that mammals and other vertebrates have evolved increased complexity by means of pleiotropy, and that pleiotropy was made possible largely by the evolution of additional enhancers. Propose an explanation for how additional enhancers might produce increased pleiotropy. Can you find examples of this phenomenon?arrow_forwardGive typed full explanation there are about 28,000 copies of zinc finger domains in the human genome, most of them as constituents of transcribed genes. This is a result of what process? Retro transposition of mobile sequences Evolutionary conservation, exon duplication and exon shuffling Evolutionary conversion of leucine zipper, helix-turn-helix, and helix-loop-helix domains into zinc finger domains Evolutionary selection for proteins that interfere with nucleosome packing Genes that “jump” with the help of a transposase.arrow_forward
- When comparing evolutionary similarities between different genes within a gene family, it is usually more straightforward to compare genes by using the protein sequences of gene products rather than DNA sequences of the genes themselves. Explain why this is the case. (Cover 4 points)arrow_forwardGenetic Engineering Genetic engineering has been used in many different ways, such as human growth hormone for the treatment of pituitary dwarfism (recombinant DNA) plants engineered to be resistant to herbicides and pests an “antifreeze” gene inserted into some Atlantic salmon and halibut Select one of the examples of genetic engineering listed above and identify at least two main disadvantages of the technology.arrow_forwardAdvisearrow_forward
- hello i need help with this DNA sometimes has chemicalgroups attached, called methyl groups, that affect geneexpression. Suppose that, during each hour, first a fractionm of unmethylated locations on the DNA become methylated,and then a fraction u of methylated locations become unmethylated. Find a recursion for the fraction f of theDNA molecule that is methylated.arrow_forwardRead This! Extensive research has been done to find similarities and differences in the DNA sequences of different an- imals. This work is very difficult and time consuming, but it can help biologists determine the evolution- ary ancestry of a species. For example, when investigating the human genome, biologists found that about 99.5% of the DNA sequences among humans are the same. Considering the wide variety of traits in the human population, we are a lot more similar than we are different. Humans share approximately 96% of their DNA sequences with chimpanzees, 85% with mice, and 75% with chickens. 16. Study the table below. Organism Pair Percentage of DNA Similarity A-B 97 A-C 85 A-D 50 a. To which organism, B, C or D, is organism A most closely related? Support your answer. b. Which pair of organisms in the table is least closely related? Support your answer. c. Which pair of organisms most likely shares a recent common ancestor? Support your answer. 4 POGIL™ Activities for High…arrow_forwardNeanderthal Hair Color The MCIR gene regulates pigmentation in humans (Sections 14.1 and 15.l revisited), .so loss-of-function mutations in this gene affect hair and .skin color. A person with two mutated alleles for this gene makes more of the reddish melanin than the brownish melanin, resulting in red hair and pa le skin. DNA extracted from two Neanderthal fossils contains a mutated MC1R allele that has not yet been found in humans, To see how the. Neanderthal mutation affects the function of the MC1R gene, Carles Lalueza-Fox and her team introduced the allele into cultured monkey cells (FIGURE 26.1 6). FIGURE 26.16 MC1R activity in monkey cells transgenic for an unmutated MClR gene, the Neanderthal MC1R allele or the gene for green fluorescent protein (GFP). GFP is- not related to MC1R. 2. What does this imply about the mutations effect on Neanderthal hair color?arrow_forward
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