If the genotype AA is susceptible to malaria but with no sickling, the genotype AS is resistant to malaria with mild sickling, and the genotype SS is resistant to malaria but has severe sickling and anemia, the individual living in an environment with malaria with the best chance of survival is a person with genotype

If the genotype AA is susceptible to malaria but with no sickling, the genotype AS is resistant to malaria with mild sickling, and the genotype SS is resistant to malaria but has severe sickling and anemia, the individual living in an environment with malaria with the best chance of survival is a person with genotype

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 2CS: If allele frequencies in the hemoglobin gene are influenced by sickle cell anemia on the one hand...

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An allele of the G6PD gene acts in a recessive manner to cause sensitivity to fava beans, resulting in ahemolytic reaction (lysis of red blood cells) afteringestion of the beans. The same allele also confersdominant resistance to malaria. The heterozygote hasan advantage in a region where malaria is prevalent.Will the equilibrium frequency (qe) be the same foran African and a North American country? Whatfactors affect qe?
Sickle cell anemia is an autosomal recessive genetic disorder. Because individuals affected bysickle cell anemia have defective hemoglobin proteins, their blood cannot transport oxygenproperly. There appears to be a relationship between the incidence of malaria and sickle cellanemia. Individuals with sickle cell anemia and carriers of the sickle cell allele have someresistance to malaria. Malaria is caused by the parasite Plasmodium and is transmitted among humans by mosquitoes. If scientists are successful in reducing significantly or eliminating malaria, the best predictionfor what will happen to the allele for sickle cell anemia in the population is that it willa. not be affected by the elimination of malariab. increase as its selective advantage is increasedc. be reduced as its selective advantage is decreasedd. disappear quickly as its selective advantage is increased
The relationship between sickle-cell anemia and malaria is called a _____. Group of answer choices Covariant Local disease relation All of these are true Balanced polymorphism
Humans who are born homozygous for the recessive sickle cell allele die of sickle cell anemia, while those who are heterozygous are resistant to malaria. 5% of the population of the Congo are homozygous recessive for the sickle cell allele. What percentage of the population is resistant to malaria?
In recent years, the country of Zambia in Africa has had increasing cases of malaria. If 9% of the population is born with a severe form of sickle-cell anemia (ss), what percentage of the population will be more resistant to malaria because they are heterozygous (Ss) for the sickle-cell gene, under the Hardy-Weinberg assumption?
Which of the following genotypes has the highest relative fitness (compared to other genotypes) in environments where there is NO malaria? A_AA B_AS C_SS
Sickle cell anemia is an autosomal recessive genetic disorder. Because individuals affected bysickle cell anemia have defective hemoglobin proteins, their blood cannot transport oxygenproperly. There appears to be a relationship between the incidence of malaria and sickle cellanemia. Individuals with sickle cell anemia and carriers of the sickle cell allele have someresistance to malaria. Malaria is caused by the parasite Plasmodium and is transmitted amonghumans by mosquitoes.4. If scientists are successful in reducing significantly or eliminating malaria, the best predictionfor what will happen to the allele for sickle cell anemia in the population is that it willa. not be affected by the elimination of malariab. increase as its selective advantage is increasedc. be reduced as its selective advantage is decreasedd. disappear quickly as its selective advantage is increased
In a sex linked recessive disease, the frequency of the causative allele is 0.4. What is the genotype frequency among males? In addition, what is the genotype frequency of heterozygous female population?
Which of the following is TRUE of the relationship between sickle cell anemia and malaria? Choose all that apply. Group of answer choices A person with malaria is more susceptible to sickle cell anemia. The sickle cell allele provides protection against malaria. In Boston, there is no advantage to the sickle cell allele. One would expect that if the frequency of malaria were to increase in an area, so would the frequency of sickle cell anemia.
Why does sickle cell anemia remain more prevalent in Sub-Saharan Africa than in the rest of the world? a. Reduced access to medical facilities presidposes Sub-Saharan Africans to an increased chance od disease. b. The prevalence of malaria in Sub-Saharan Africa provided a selective advantage to individuals who were heterozygous. c. Infection with malaria provides a selective disadvantage to individuals who are heterozygous for the sickle cell allele. d. People of African ancestry are genetically predisposed to carry the sickle cell allele
The image above shows that, with respect to the WRN gene, the individual with Werner syndrome (WRN) is: Choice 1 of 2: Heterozygous Choice 2 of 2: Homozygous
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