1) malaria is caused by _______ and transmitted by ______ 2) how does the presence of...
Homework Answers
Malaria is caused by plasmodium , a group of single celled
microbes.
It is spread by female Anopheles mosquito.
Sickle cell person contains valine in their hemoglobin instead
of glutamine.
This occurs due to mutation in genes of hemoglobin-beta gene on
chromosome 11.
This is usually represented by HbS allele.
This disrupts the shape of red blood cell and changes it to sickle
shape.
This affects the functioning of blood cell and people become
anemic.
This leads to infection of brain, kidney,liver etc.
This condition ultimately leads to death.
Add Answer to:
1)
malaria is caused by _______ and transmitted by ______
2) how does the presence of...
1. Which of the following is FALSE? A. If a genetic disease reduces fertility and the...
1. Which of the following is FALSE? A. If a genetic disease reduces fertility and the allele that causes the disease offers no other advantage, the allele will likely eventually disappear, due to natural selection. B. Natural selection does not favor individuals who are homozygous for the sickle-cell allele, because these individuals typically die before they are old enough to reproduce. C. Individuals who are heterozygous HbA/HbS are protected from malaria, and this is why sickle-ce disease persists in wetter,...
Sickle-cell anaemia is an example of how fitness depends on environmental conditions. In places where malaria,...
Sickle-cell anaemia is an example of how fitness depends on environmental conditions. In places where malaria, caused by Plasmodium falciparum is common, HbAHbS heterozygotes have a selective advantage compared to individuals who are homozygotes for the wild type allele. However, HbSHbS homozygotes suffer from sickle-cell anaemia and usually die before producing offspring. The relative fitness (w) of the three genotypes in Nigeria are: HbAHbA 0.78, HbAHbS 1.0 HbSHbS 0.07 a. What is the mathematical relationship between relative fitness and selection...
Use the following information to answer the next two questions. Sickle cell anemia is a disease...
Use the following information to answer the next two questions. Sickle cell anemia is a disease that is caused by a mutation in the gene that produces haemoglobin. Hemoglobin carries oxygen in red blood cells. The HbA allele produces normal hemoglobin and the HbS allele produces haemoglobin that sticks together and causes red blood cells to sickle. Heterozygous individuals (HbAHbS) produce both normal and "sickle" hemoglobin so the HbA and HbS alleles are codominant. Heterozygotes do not develop sickle cell...
In humans, sickle-cell anemia is caused by a recessive lethal allele Hbs. A healthy allele is...
In humans, sickle-cell anemia is caused by a recessive lethal allele Hbs. A healthy allele is denoted by Hba. Following is a table that shows the three possible genotypes, with the associated phenotypes. Genotype Phenotype Hba Hba Healthy (no sign of disease) HbaHbs Healthy (no sign of disease) Hbs Hbs Shows symptoms of sickle-cell anemia What is the probability of two heterozygous individuals giving birth to a child who has a sickle-cell allele, but shows a healthy phenotype? Enter in...
Describe what malaria is and where it is prevalent – in what areas of the globe...
Describe what malaria is and where it is prevalent – in what areas of the globe and in what habitats? 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? Describe the effect of malaria on the frequency of the HbS allele in areas where malaria is common: In areas with malaria, which...
Q5.1. Which of the following is FALSE? If a genetic disease reduces fertility and the allele...
Q5.1. Which of the following is FALSE? If a genetic disease reduces fertility and the allele that causes the disease offers no other advantage, the allele will likely eventually disappear, due to natural selection. Natural selection does not favor individuals who are homozygous for the sickle- cell allele, because these individuals typically die before they are old enough to reproduce. Individuals who are heterozygous HbA/HbS are protected from malaria, and this is why sickle-cell disease persists in wetter, mosquito-prone regions...
In a population of the Yoruba ethnic group living in a region of Nigeria with a...
In a population of the Yoruba ethnic group living in a region of Nigeria with a high prevalence of malarial infection, the frequency of the HbS allele for sickle-cell hemoglobin was 0.2. Suppose that individuals in this population mate randomly, and that the fitness of HbSHbS homozygotes in this environment is only 15% as high as HbAHbS heterozygotes. 1. If the frequency of the HbS allele in this population represents an equilibrium involving malaria-induced selection against HbAHbA homozygotes vs. selection...
Allison described the presence of the sickle cell allele in areas of high malarial severity as...
Allison described the presence of the sickle cell allele in areas of high malarial severity as an example of heterozygote advantage. Based on your experimental conclusions, how would you define heterozygote advantage? O A situation where heterozygotes are not susceptible to genetic drift. The process by which an allele becomes fixed in a population. When heterozygous individuals are more fit than those with either homozygous genotype. O When heterozygous individuals have two different alleles. Hypothesize how comprehensive access to medicines...
1. What is the cell and physiological basis for the protective effect of sickle cell against...
1. What is the cell and physiological basis for the protective effect of sickle cell against malaria? 2. How do hemoglobin molecules function (or malfunction) when they include two chains of HbS?
JUST PART B PLEASE AND THANK YOU TABLE OF CHI SQUARED VALUES. D.F = DEGREES OF...
JUST PART B PLEASE AND THANK YOU
TABLE OF CHI SQUARED VALUES. D.F = DEGREES OF FREEDOM
df
<0.10
<0.05
<0.01
<0.001
1
2.706
3.841
6.635
10.8
2
4.605
5.991
9.210
13.8
3
6.251
7.815
11.345
16.3
4
7.779
9.488
13.277
18.5
5
9.236
11.070
15.086
20.5
6
10.645
12.592
16.812
22.4
8
13.362
15.507
20.090
26.1
10
15.987
18.307
23.209
29.6
12
18.549
21.026
26.217
32.9
20
28.412
31.410
37.566
45.3
25
34.382
37.652
44.314
52.6
Rules for Assigning...
Q5.1. Which of the following is FALSE? If a genetic disease reduces fertility and the allele that causes the disease offers no other advantage, the allele will likely eventually disappear, due to natural selection. Natural selection does not favor individuals who are homozygous for the sickle- cell allele, because these individuals typically die before they are old enough to reproduce. Individuals who are heterozygous HbA/HbS are protected from malaria, and this is why sickle-cell disease persists in wetter, mosquito-prone regions...
Allison described the presence of the sickle cell allele in areas of high malarial severity as an example of heterozygote advantage. Based on your experimental conclusions, how would you define heterozygote advantage? O A situation where heterozygotes are not susceptible to genetic drift. The process by which an allele becomes fixed in a population. When heterozygous individuals are more fit than those with either homozygous genotype. O When heterozygous individuals have two different alleles. Hypothesize how comprehensive access to medicines...
JUST PART B PLEASE AND THANK YOU
TABLE OF CHI SQUARED VALUES. D.F = DEGREES OF FREEDOM
df
<0.10
<0.05
<0.01
<0.001
1
2.706
3.841
6.635
10.8
2
4.605
5.991
9.210
13.8
3
6.251
7.815
11.345
16.3
4
7.779
9.488
13.277
18.5
5
9.236
11.070
15.086
20.5
6
10.645
12.592
16.812
22.4
8
13.362
15.507
20.090
26.1
10
15.987
18.307
23.209
29.6
12
18.549
21.026
26.217
32.9
20
28.412
31.410
37.566
45.3
25
34.382
37.652
44.314
52.6
Rules for Assigning...
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