What is the selective factor, or selective environment, which allows carriers of the sickle-cell allele to have higher fitness than other genotypes? Group of answer choices A-Africa B-sickle-cell disease C-AIDS D-malaria
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What is the selective factor, or selective environment, which allows carriers of the sickle-cell allele to have higher fitness than other genotypes?
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- Describe how an individual’s genotype influences their chance of contracting malaria: which individual is more likely to get malaria- an individual with two HbA alleles or an individual with one HbA allele and one HbS allele? Why? Why do people with one HbS allele tend not to get malaria?Explain how stabilizing selection maintains sickle-cell disease.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 conclusions can be drawn from all the information provided on sickle cell anemia? The malaria-causing microorganism Plasmodium falciparum is injected by mosquitoes into the bloodstream of humans. Historically, the frequency of the Hb allele in Africa relates directly to the presence of malaria-causing organisms. In western Africa, the frequency of the Hb allele in the gene pool is 0.15. In central Africa, the frequency is 0.10, and in southern Africa the frequency is 0.05. The sickle cell gene will eventually disappear because of its interaction with malaria. Malaria causes heterozygous individuals to be less fertile than homozygous individuals. In Africa, sickle cell anemia will disappear since it is lethal in the homozygous condition. In Africa, carriers for sickle cell anemia have an advantage over homozygous individuals. *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.Select the three hypotheses that explain why being born in the United States leads to a higher chance of developing allergies.
- Familial Mediterranean fever is an inheritable disorder that causes inflammation in the abdomen, chest, or joints. Let F be the dominant allele and let f be the recessive allele. The genotypes of individuals II-4, III-2, and IV-3, respectively, are Select one: a. F_, F_, and F_ b. F_, FF, and Ff c. Ff, F_, and Ff d. F_, Ff, and F_What is the percentage of people that get Wolf Hirschhorn disease. Does it affect a particular gender/culture/age group. Is it preventable? If so give me some facts like. By doing this you can drop your risk by _____percent. This can lead to increase risk. If it is genetic then talk about how common it is in the populationExplain where, in the world, the Hbs allele is mostly likely to be prevalent and why the allele persists in spite of the danger associated with having two Hbs alleles.
- In parts of equatorial Africa, where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the ß-hemoglobin alleles in the human gene pool. The sickle cell trait provides an advantage against malaria compared to people with normal hemoglobin. In the United States, the parasite that causes malaria is not present, but African Americans whose ancestors were from equatorial Africa have the sickle-cell B- hemoglobin allele. These differences in traits illustrate O inclusive fitness because people have evolved molecular differences to adapt to environmental stimuli O inclusive fitness because ß-hemoglobin increases the proliferation of beneficial traits in the population O relative fitness because people have evolved molecular differences to an environmental pathogen O relative fitness because the molecular differences in ß-hemoglobin are passed to the next generationIf 9% of an African 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?In the image below, six diploid individuals are analyzed with regard to three different alleles (A, B, & C) of the same SSR. What are the genotypes of individuals 1, 3, and 6 (highlighted below)? 3 4 5 6 Allele A B C 1 2 1: CC; 3: AA; 6: AB 1: ABC; 3: ABC; and 6: ABC 1: C; 3: A; 6: B 1: AB; 3: BC; 6: CC | | Direction of electrophoresis