Cased by a muated allele. Individuals who have this disease cannot metabolise three amino acids deucine, isoleucine and valine). They have neurological damage and urine with the characteristic maple yrup mell Ina human population i out of 200 individuals are born with MSUD 0 Using the Hardy-Weinberg equation, wherep represents normal and eisthe MSUD allele, calculate the values of pand to three significant fiures 2 (21 0 Uing your values forpand e caleulate the number of Individuals expected ina population of 100000 who are
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- Nine rII− mutants of bacteriophage T4 were used inpairwise infections of E. coli K(λ) hosts. Six of themutations in these phages are point mutations; theother three are deletions. The ability of the doubly infected cells to produce progeny phages in large numbers is scored in the following chart.1 2 3 4 5 6 7 8 91 − − + + − − − + +2 − + + − − − + +3 − − + − + − −4 − + − + − −5 − − − + +6 − − − −7 − + +8 − −9 −The same nine mutants were then used in pairwise infections of E. coli B hosts. The production of progenyphages that can subsequently lyse E. coli K(λ) hosts isnow scored. In the table, 0 means the progeny do notproduce any plaques on E. coli K(λ) cells; − meansthat only a very few progeny phages produce plaques;and + means that many progeny produce plaques(more than 10 times as many as in the − cases).1 2 3 4 5 6 7 8 91 − + + + + − − + +2 − + + + + − + +3 0 − + 0 + + −4 − + − + + +5 − + − + +6 0 0 − +7 0 + +8 − +9 −a. Which of the mutants are the three deletions? Whatcriteria did…Sickle-cell anemia is a recessive autosomal disorderthat is caused by an amino acid substitution in theβ-hemoglobin protein. The DNA mutation underlyingthis substitution is a SNP that alters a GAG codon forthe amino acid glutamate to a GTG that codes a valine.The frequency of sickle-cell anemia among AfricanAmericans is about 1/400. What is the frequency ofthis GTG codon in the β-hemoglobin gene amongAfrican Americans?Price et al. [(1999). J. Bacteriol. 181:2358–2362] conducteda genetic study of the toxin transport protein (PA) of Bacillusanthracis, the bacterium that causes anthrax in humans. Withinthe 2294-nucleotide gene in 26 strains they identified five pointmutations—two missense and three synonyms—among differentisolates. Necropsy samples from an anthrax outbreak in 1979revealed a novel missense mutation and five unique nucleotidechanges among ten victims. The authors concluded that thesedata indicate little or no horizontal transfer between differentB. anthracis strains. Question: Which types of nucleotide changes (missense or synonyms)cause amino acid changes?
- Price et al. [(1999). J. Bacteriol. 181:2358–2362] conducteda genetic study of the toxin transport protein (PA) of Bacillusanthracis, the bacterium that causes anthrax in humans. Withinthe 2294-nucleotide gene in 26 strains they identified five pointmutations—two missense and three synonyms—among differentisolates. Necropsy samples from an anthrax outbreak in 1979revealed a novel missense mutation and five unique nucleotidechanges among ten victims. The authors concluded that thesedata indicate little or no horizontal transfer between differentB. anthracis strains. Question: On what basis did the authors conclude that evidence ofhorizontal transfer is absent from their data?Price et al. [(1999). J. Bacteriol. 181:2358–2362] conducteda genetic study of the toxin transport protein (PA) of Bacillusanthracis, the bacterium that causes anthrax in humans. Withinthe 2294-nucleotide gene in 26 strains they identified five pointmutations—two missense and three synonyms—among differentisolates. Necropsy samples from an anthrax outbreak in 1979revealed a novel missense mutation and five unique nucleotidechanges among ten victims. The authors concluded that thesedata indicate little or no horizontal transfer between differentB. anthracis strains. Question: What is meant by ”horizontal transfer”?We often speak of diseases such as phenylketonuria (PKU) andachondroplasia as having a genetic basis. Explain whether the followingstatements are accurate with regard to the genetic basis ofany human disease (not just PKU and achondroplasia).A. An individual must inherit two copies of a mutant allele to havedisease symptoms.B. A genetic predisposition means that an individual has inheritedone or more alleles that make it more likely that she or he willdevelop disease symptoms than other individuals in a populationwill.C. A genetic predisposition to develop a disease may be passedfrom parents to offspring.D. The genetic basis for a disease is always more important thanthe environment.
- Paratuberculosis is a contagious, chronic and sometimes fatal infection that primarily affects the small intestine of ruminants. Mycobacterium avium subsp. paratuberculosis (MAP) is the causative agent of paratuberculosis. This kind of disease can exist undetected in herds for years. In order to detect the paratuberculosis among ruminants, thiol modified oligonucleotide having the sequence of 5’- GAT GAC ATC GCA GTC GAG CTG- 3’ was functionalized in the 15 nm gold nanoparticles. How many bonds (total bonds) will be formed upon hybridization with its complementary sequence? Answer Format: (Number only) *Sickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of this genetic defect causes deformation of red blood cells. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. Assuming HWE, if 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…Sickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the genetic defect. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. 11% 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…
- Sickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the genetic defect. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. 11% of an African population is born with a severe form of sickle-cell anemia (ss), What is the frequency of the dominant allele? Please show your work in order to receive credit.Sickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the genetic defect. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. 11% of an African population is born with a severe form of sickle-cell anemia (ss), What is the frequency of the recessive allele? Please show your work in order1a) Explain how amino acids in casein could reach the liver, starting fromthe moment when the person takes a bite of pastry cream pie. b) Congenital lactase deficiency is a type of lactose intolerance that occursin infants. It is inherited in an autosomal recessive pattern. Calculate thechance of congenital lactose intolerance in a child whose parents are both carriersfor the disorder, showing fully how you reached your answer.