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- Thank youQ6.6. If gametes from a gene pool combine randomly to make only a small number of zygotes, the allele frequencies among the zygotes may be quite different than they are in the gene pool. Why? The effects of natural selection are more pronounced in small populations. Changes in allele frequencies over many generations are inevitable with sexual reproduction. Alleles combine more randomly with a small number of zygotes. The effects of sampling error are more pronounced with smaller samples.Q5.1. Which of the following is FALSE? O 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 HbAlHbS are protected from malaria, and this is why sickle-cell disease persists in wetter, mosquito-prone regions in Africa. O In regions where malaria does not occur, individuals who are heterozygous HbAIHbS have a fitness advantage over those who are homozygous for the normal hemoglobin allele (HbA).
- Q5.4. If the frequency of the HbS allele is 0.6 in a population, what is the frequency of the HbA allele (assuming this is a two-allele system)?Q- After placing fruit-fly traps that humanely kill fruit flies around the building, the population of fruit flies has been reduced to 100. Of these fruit flies, 36 have red eyes. (a) What is the new allele frequency for red eye colour? Express your answer as a number between 0 and 1. (b) Describe the evolutionary mechanism that caused the change in allele frequencyQ5.1. 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 Africa. OIn regions where malaria does not occur, individuals who are heterozygous HBAIHBS have a fitness advantage over those who are homozygous for the normal hemoglobin allele (HbA). Submit Q5.2. AFTER malaria is cured, the frequency of the HbS allele should decrease in regions with lots of mosquitoes because: People will no longer die from sickle-cell disease in these regions. Having one copy of the HbS allele will no longer be advantageous in these…
- Тext 7. If 96 out of 200 individuals in a population express the recessive phenotype, what percent of the population are heterozygotes? 40% 8. A hypothetical population of 100,000 humans has 68,240 individuals with the blood type AA, 28,735 individuals with blood type AB and 3025 individuals with the blood type BB. a. What is the frequency of each genotype in this population? b. What is the frequency of the A allele? c. What is the frequency B allele? d. If the next generation contained 250,000 individuals, how many individuals would have blood type BB, assuming the population is in Hardy-Weinberg equilibrium?Q5. 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 anemia persists in wetter, mosquito-prone regions in Africa. O In regions where malaria does not occur, individuals who are heterozygous HbA/HbS have a selective advantage over those who are homozygous for the normal hemoglobin allele (HbA).Q5.9. A person who is heterozygous for the cystic fibrosis allele moves to a small, isolated community where no one previously carried the allele. If the cystic fibrosis allele protects against tuberculosis the same way the sickle cell allele protects against malaria, what should happen to the frequency of the cystic fibrosis allele in the community over time, and why?
- If the genotype frequencies in a population are 0.60 AA, 0.20 Aa, and 0.20 aa, and if the requirements of the HardyWeinberg principle apply, the genotype frequencies in the offspring generation will be: a. 0.60 AA, 0.20 Aa, 0.20 aa. b. 0.36 AA, 0.60 Aa, 0.04 aa. c. 0.49 AA, 0.42 Aa, 0.09 aa. d. 0.70 AA, 0.00 Aa, 0.30 aa. e. 0.64 AA, 0.32 Aa, 0.04 aa.solve G-M but make sure you read previous statements if needed ( ragoon/ Rat Is same )Sample A has been allowed to breed randomly for many generations. At a particular gene locus, there are two alleles, and one is dominant to the other. After several generations, 64% of the animals have the phenotype associated with the dominant allele. Population A is in Hardy-Weinberg Equilibrium.a) In Colony A, what is the estimated frequency of the recessive allele and heterozygous genotype? Sample B has been studied for many generations. The slope of the regression line describing the relationship between the number of whiskers in an offspring and the average number of whiskers of both parents is 0.50.b)What is the heritability (h2) of abdominal bristle number in Sample B? c) Suppose that the mean whisker number in Sample B is 26 and suppose that the researcher chooses rats for breeding such that the mean whisker number of breeding individuals is 36. What would you expect the mean number of…Q5.3. Someone has handed you the following graph of changes in the frequency of one allele in a population over time. Based on the graph and without any other information, which of the following is most likely true? Allele Frequency 1.0 + 0.75 0.50 0.25 0.00 10 Time (generation) 20 The allele does not offer any fitness advantage and the population is small. The allele does not offer any fitness advantage and the population is large. The allele offers a selective advantage and the population is small. The allele was introduced at a very low frequency and the population is large. 30