Genetics: From Genes to Genomes, 5th edition
5th Edition
ISBN: 9780073525310
Author: Leland H. Hartwell, Michael L. Goldberg, Janice A. Fischer, Leroy Hood, Charles F. Aquadro
Publisher: McGraw-Hill Education
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Chapter 20, Problem 35P
As noted in Fig. 21.22, humans now living in Oceania (e.g, Melanesia, Micronesia, Polynesia, and Australia) represent an early offshoot in the spread of humans around the world from an origin in Africa.
| a. | Given these |
| b. | Explain why variants found in Denisovan DNA are found only in modern humans living in Southeast Asia and Oceania but nowhere else on earth. |
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You have collected and determined genotypes of 200 individuals from a population of thr fruit fly, Drosophila pseudoobscura. Your sequencing study revealed 20 individuals with genotype AA, 70 individuals with genotype Aa and 110 individuals with genotype aa.
i) what are your theoretical expectations for the number of individuals with each genotype if the population is in Hardy-Weinberg equilibrium.
ii) Based on the genotype counts observed, is there evidence that this population of fruit flies deviates from your theoretical expectations under Hardy-Weinberg equilibrium?
Native American populations in North and South America have mitochondrial DNA haplotypes that can be traced to populations
in northeast Asia. The Aleut and Eskimo populations in the far northern parts of North America possess a subset of the same
haplotypes that link other Native Americans to Asia, and also have several additional haplotypes that can be traced to Asian
origins but are not found in native populations in other parts of the Americas.
Which statement offers a possible explanation for this observation?
The pattern of haplotypes in the Aleut and Eskimo populations suggests that their ancestors' migration into the
American Arctic regions was separate from the migrations that eventually populated the rest of North and
South America.
The subset of similar haplotypes between the two populations suggests that the Native American populations with a link
to Asia descended from the Aleut and Eskimo populations residing in the far northern parts of North America.
Sharing a subset of…
Please help with the following:
Lactase persistence is an adaptation to milk drinking that has developed since the beginning of agriculture ~10 KYA. What is the relationship between the alleles driving this ability in European, Indian and African populations?
A. One allele is responsible for lactase persistence in Europeans and Indians because of where agriculture originated and was introduced through migration. routes.
B. The allele responsible for lactase persistence in all three populations is the same allele on the LCT gene.
C. Different alleles are responsible for lactase persistence in each population.
D. One allele is responsible for lactase persistence in Europeans, but other alleles cause the trait in Indian and African populations.
E. One allele is responsible for lactase persistence in Africans, but other alleles cause the trait in European and Indian populations.
Chapter 20 Solutions
Genetics: From Genes to Genomes, 5th edition
Ch. 20 - Choose the best matching phrase in the right...Ch. 20 - When an allele is dominant, why does it not always...Ch. 20 - A population with an allele frequency p of 0.5 and...Ch. 20 - Prob. 4PCh. 20 - Which of the following populations are at...Ch. 20 - A dominant mutation in Drosophila called Delta...Ch. 20 - A large, random mating population is started with...Ch. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Two hypothetical lizard populations found on...
Ch. 20 - It is the year 1998, and the men and women sailors...Ch. 20 - Prob. 12PCh. 20 - In 1927, the ophthalmologist George Waaler tested...Ch. 20 - Prob. 14PCh. 20 - A gene has two alleles A frequency = p and a...Ch. 20 - Some people can taste the bitter compound...Ch. 20 - Androgenetic alopecia pattern baldness is a...Ch. 20 - Why is the elimination of a fully recessive...Ch. 20 - Tristan da Cunha is a group of small islands in...Ch. 20 - Small population size causes genetic drift because...Ch. 20 - Prob. 21PCh. 20 - A mouse mutation with incomplete dominance t =...Ch. 20 - In Drosophila, the vestigial wings recessive...Ch. 20 - Prob. 24PCh. 20 - You have identified an autosomal gene that...Ch. 20 - In Europe, the frequency of the CF allele causing...Ch. 20 - An allele of the G6PD gene acts in a recessive...Ch. 20 - Explain why evolutionary biologists monitor...Ch. 20 - What is the most straightforward evidence at the...Ch. 20 - In March 2013, the American Journal of Human...Ch. 20 - If you go back 40 generations into your biological...Ch. 20 - In Fig. 21.17, to what part of the world does...Ch. 20 - Predict the DNA sequences at the four nodes...Ch. 20 - A cladogram not drawn to scale for the taxonomic...Ch. 20 - As noted in Fig. 21.22, humans now living in...
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