Genetics: From Genes to Genomes
6th Edition
ISBN: 9781259700903
Author: Leland Hartwell Dr., Michael L. Goldberg Professor Dr., Janice Fischer, Leroy Hood Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 21, Problem 29P
Explain why evolutionary biologists monitor selectively neutral polymorphisms as molecular clocks.
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Chapter 21 Solutions
Genetics: From Genes to Genomes
Ch. 21 - Choose the best matching phrase in the right...Ch. 21 - When an allele is dominant, why does it not always...Ch. 21 - A population with an allele frequency p of 0.5 and...Ch. 21 - In a certain population of frogs, 120 are green,...Ch. 21 - Which of the following populations are at...Ch. 21 - A dominant mutation in Drosophila called Delta...Ch. 21 - A large, random mating population is started with...Ch. 21 - Prob. 8PCh. 21 - Alkaptonuria is a recessive autosomal genetic...Ch. 21 - Two hypothetical lizard populations found on...
Ch. 21 - It is the year 1998, and the men and women sailors...Ch. 21 - a. Alleles of genes on the X chromosome can also...Ch. 21 - In 1927, the ophthalmologist George Waaler tested...Ch. 21 - The equation p2 2pq q2> = 1 representing the...Ch. 21 - A gene has two alleles A frequency = p and a...Ch. 21 - Some people can taste the bitter compound...Ch. 21 - Androgenetic alopecia pattern baldness is a...Ch. 21 - The following figure shows the FBI-style analysis...Ch. 21 - Why is the elimination of a fully recessive...Ch. 21 - Tristan da Cunha is a group of small islands in...Ch. 21 - Small population size causes genetic drift because...Ch. 21 - Three basic predictions underlie genetic drift in...Ch. 21 - A mouse mutation with incomplete dominance t =...Ch. 21 - In Drosophila, the vestigial wings recessive...Ch. 21 - In a population of infinite size, three loci A, B,...Ch. 21 - You have identified an autosomal gene that...Ch. 21 - In Europe, the frequency of the CF allele causing...Ch. 21 - An allele of the G6PD gene acts in a recessive...Ch. 21 - Explain why evolutionary biologists monitor...Ch. 21 - Tiny foxes live on the Channel Islands off the...Ch. 21 - What is the most straightforward evidence at the...Ch. 21 - In March 2013, the American Journal of Human...Ch. 21 - If you go back 40 generations into your biological...Ch. 21 - In Fig. 21.17, to what part of the world does...Ch. 21 - Predict the DNA sequences at the four nodes...Ch. 21 - A cladogram not drawn to scale for the taxonomic...Ch. 21 - As noted in Fig. 21.22, humans now living in...Ch. 21 - As of this writing in 2016, no Neanderthal-derived...
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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
- An hypothesis for the extinction of the dinosaurs is that the earth had been hit by a gigantic meteor that caused the death of those big reptiles. In that case the entire genetic pool of those animals has been destroyed, invalidating the Hardy-Weinberg equilibrium. In Genetics what is this type of gene frequency change called?arrow_forwardExplain how Darwinian evolution can decrease and increase the frequency of an allele (or a more complex heritable trait, for that matter).arrow_forwardYou find a population of 200 mice in which 32 of them display the recessive fur color. What is the genetic structure (the allelic and genotypic frequencies) in that population, with respect to fur color?arrow_forward
- Natural selection means that the environment favors survival of some genotypes. From where does diversity in genotypes come?arrow_forwardExplain how Darwinian evolution can decrease and increase the frequency of an allele or a more complex heritable traitarrow_forwardMany genetic studies, particularly those of recessive traits, have focused on small, isolated human populations, such as those on islands. Suggest one or more advantages that isolated populations might have for the study of recessive traits.arrow_forward
- Applying the Hardy-Weinberg equilibrium. 81% of the individuals are homozygous for a recessive allele. What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?arrow_forwardFrom the pedigree in the previous question, suppose Jon Snow can help Daenerys Targaryan at a cost of 0.05. How great must the benefit (b) to Daenerys be for natural selection to favor this helping behavior? The benefit (b) must be greater than ___. A. 0.05 B. 0.1 C. 0.2 D. 0.4 If the value of linkage disequilibrium (D) is equal to -0.25, one can infer that the alleles at the two loci are Select one: a. in repulsion. b. in coupling. c. in linkage disequilibrium. d. A and C e. None of the abovearrow_forwardWhat historical, social, religious, cultural, and economic factors promote genetic drift in humans? Can you think of some specific human groups in which genetic drift is likely to have occurred?arrow_forward
- Discuss the significance of the HardyWeinberg principle as it relates to evolution and list the five conditions required for genetic equilibrium.arrow_forwardGenetic drift is often described as a “chance event.” Give other examples of chance events that could cause a genetic bottleneck.arrow_forwardWhy is inbreeding not advisable?arrow_forward
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