Feure .... From: "Why our flu vaccines can't keep up" Which one of the graphs shows the frequency of trait varialion in the surviving sparrow population after the storm.?
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Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
What conclusions can you draw about influenza vaccination cross-reactivity?
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- Assuming these are all of the possible genotypes in the population what does ff+Ff+FF=A graduate student is studying a population of bluebonnets along aroadside. The plants in this population are genetically variable. Shecounts the seeds produced by each of 100 plants and measures the meanand variance of seed number. The variance is 20. Selecting one plant,the student takes cuttings from it and cultivates them in a greenhouse,eventually producing many genetically identical clones of the sameplant. She then transplants these clones into the roadside population,allows them to grow for one year, and then counts the seeds produced byeach of the cloned plants. The student finds that the variance in seednumber among these cloned plants is 5. From the phenotypic variancesof the genetically variable and the genetically identical plants, shecalculates the broad-sense heritability.In a given population, the frequencies of the dominant allele (A) and recessive allele (a) of a given gene are 80% and 20%, respectively. The frequency of the Aa genotype in the above population is? (two decimal places)
- A POPULATION DATABASE CONTAINING 12345 ALLELES A PARTICULAR ALLELE X IS PRESENT FOR 458 TIMES. WHAT WOULD BE THE FREQUENCY OF GENOTYPE WHICH IS HOMOZYGOUS FOR THAT ALLELE?Which parameter from the software must you adjust in order to permit gene flow? Select One. Starting frequency of allele A1 Fitness of genotype A1A1 Mutation rate from A1 to A2 Fraction migrants each generation Population size Inbreeding coefficient (F)You have collected data on the observed genotype frequencies of the next generation. They are: 60% FF, 30% Ff, and 10% ff. Based on these observations and your expectations, is this trait currently evolving in this population? Why or why not? Show your work.
- Flower colour in snapdragon plants is a single gene trait controlled by two alleles.In a population of 350 plants, 56% of the alleles are recessive. What is the frequency of the dominant allele in the gene pool?Record your answer as a value between 0 and 1 rounded to two decimal places.Which parameter from the software must you adjust in order to increase the mutation rate in the gene pool? Starting frequency of allele A1 Fitness of genotype A1A1 Mutation rate from A1 to A2 Fraction migrants each generation Population size Inbreeding coefficient (F)In a population of 500 fruit flies, 250 are genotype RR, 100 are genotype Rr and 150 are genotype rr. Determine the allele frequencies for this gene in this population. Remember that the frequencies should add to 1. Please show your work.
- You are studying gene Q/q in two populations of great white sharks. In one population most individuals have genotype QQ, and in the other population most individuals have the genotype qq. If there is some migration from each population into the other, how will this affect genotype frequencies?In tomatoes, red fruit (R) is dominant over yellow fruit (r). In a tomato plant population exhibiting Hardy–Weinberg equilibrium, if allele r has a frequency of 0.66, what percentage of the population is homozygous dominant for this trait? Express your answer using three significant digits. Answer%The allele for the ability to roll one’s tongue is dominant over non-rollers. In a population of 500 people,100 people are non-rollers. Compute for the gene and genotype frequency of the population.