34.Sickle cell anemia is caused by
a)deletion of a single
b)addition of a single
c)change of a single base
d)change of two bases
I believe the correct answer to be:
Option C) Change of a single base.
As it is caused by a single point mutation in the gene that codes for hemoglobin.
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34.Sickle cell anemia is caused by a)deletion of a single b)addition of a single c)change of...
Sickle-cell anemia is caused by a single point mutation in the hemoglobin of human red blood cells. It is a recessive gene. People who have sickle cell anemia are homozygous recessive and suffer terribly from this disorder. Now I have stated in lecture that mutations are neither good nor bad. Rather it depends on how the mutation effects the survival of the species. If the mutation harms the survival of the species it is bad, if it helps the survival...
In humans, sickle-cell anemia (HBBSHBBS) is caused by the recessive condition of an autosomal gene with two alleles: HBBA (wild-type) and HBBS (sickle-cell mutation). In one population, the frequency of individuals who do not suffer from sickle-cell anemia (HBBAHBBA and HBBAHBBS) is 0.9964. Assuming the population is in Hardy-Weinberg equilibrium, what is the frequency of the HBBS allele?
Sickle-cell anemia is caused by a single point mutation in the hemoglobin of human red blood cells. It is a recessive gene. People who have sickle cell anemia are homozygous recessive and suffer terribly from this disorder. Now I have stated in lecture that mutations are neither good nor bad. Rather it depends on how the mutation effects the survival of the species. If the mutation harms the survival of the species it is bad, if it helps the survival...
Sickle-cell Anemia Study Sickle-cell anemia or Sickle-cell disease, is a hereditary disorder. characterized by aryabnormality in the oxygen-carrying hemoglobin molecule in erythrocytes. Sickle-cell conditions have an autosomal recessive pattern of inheritance from parents. The sickle cell defect is a mutation of a single nucleotide of the hemoglobin B gene, which results in glutamic acid being substituted by a different amino acid at position 6. Hemoglobin with this mutation is referred to as Hbs, as opposed to the normal hemoglobin HbA....
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...
11) A single base addition and a single base deletion approximately 15 bases apart in the mRNA specifying the protein lysozyme from the bacterial virus T4 caused a change in the protein from its normal composition ...lys-ser-pro-ser-leu-asn-ala-ala-lys... to the abnormal form ...lys-val-his-his-leu-met-ala-ala-lys... a) Decipher the segment of mRNA for both the original protein and the double mutant. b) Which base was added and which base was deleted?
11) A single base addition and a single base deletion approximately 15 bases apart in the mRNA specifying the protein lysozyme from the bacterial virus T4 caused a change in the protein from its normal composition ...lys-ser-pro-ser-leu-asn-ala-ala-lys... to the abnormal form ...lys-val-his-his-leu-asn-ala-ala-lys... a) Decipher the segment of mRNA for both the original protein and the double mutant. b) Which base was added and which base was deleted?
The allele that causes sickle-cell anemia is the result of __________. a. two chromosomal translocations followed by fusions b. an insertion leading to a frameshift mutation that changed all downstream codons c. a single base substitution causing a transversion mutation d. a silent mutation, which is why it goes unnoticed until adulthood
A woman has a father with sickle-cell anemia, which is an autosomal recessive trait. She does not have symptoms of sickle-cell anemia. What is her genotype? (0.5 marks) b) She is about to start a family, and she knows that her partner’s mother has sickle-cell anemia, but he does not have the disease himself. What is the probability of them having a child with sickle-cell anemia? Demonstrate this using a Punnett square. (2.5 marks) c) If they have three children,...
All of the following regarding sickle cell anemia phenotype is true, except: a. Sickle cell trait in HbB/HbS heterozygotes gives them resistance to malaria b. Properties of oxyhemoglobin are severely affected by HbS substitution c. Both alleles in hemoglobin beta-chain (HbB) gene are mutated in a full-blown condition d. Solubility of deoxyhemoglobin is decreased