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- 1- If additive genes contribute to all of the observed phenotypic variation for a quantitative characteristic, then what must be true? a-Narrow-sense heritability for this characteristic will be equal to 0.5 b-The mean phenotype of the parental generation will be equal to the phenotype of the individuals in F1 c-Broad-sense-heritability for this characteristic will be greater than narrow-sense heritability. 2- How can a geneticist find and map quantitative trait loci (QTLs)? a-By dividing the covariance by the product of the standard deviations of traits x and y b-By determining whether different genotypes for a known DNA marker also show variation in a quantitative characteristic c-By determining the selection response "R" and the selection differential "s" d-By calculating the genetic variance for a quantitative from the phenotypic and environmental variance asap please.What is the Strategy for genetic mapping of quantitative trait loci (QTLs) influencing complex traits?Based on the Eurachem guide on fitness for purpose, how are bias and precision defined. What are the 3 ways bias can be assessed and what are the 4 ways precision can be assessed?
- Discuss the case of sickle-cell disease as an example of stabilizing selection.https://www.researchgate.net/publication/235324145_Quantitative_Genetic_Application_in_the_Selection_Process_for_Livestock_Production Give a brief discussion about the study above mainly about genetics and variation- Gramm X P Pearson X G translat x 7 Traduct x Textboc x b Bongo x b Virt X Unit 58 3144/viewContent/112835/View pruce Harbor, Mai.. Aprende a hablar u. speaking, how many genes are involved in influencing such characters? b. How do the measurements of quantitative characters distribute in a population, i.e., according to what kind of curve? c. Give an example of a 2 quantitative characters other than those mentionedin the class materials. 1) 2) Q4. A person has symptoms of fatigue and lethargy. The doctor suspects that, for some reason, blood sugar levels are abnormally low. But testing indicates that blood sugar levels are normal. Further testing reveals that sugar levels inside cells are indeed abnormally low. a. What could be going on here? Why might the sugar levels inside the cells be low even though in the bloodstream they are normal? State in terms of genes. b. One way to explain the situation in part a is that a gene at one locus is affecting the expression of a gene at a…
- Which of the following can the results of a QTL tell you? a. Identify all of the causative genes underlying a trait. b. Identify the specific marker locus causes the phenotype you are tracking. c. Identification of regions of the genome that are associated with a trait. d. Identify haplotypes associated with specific traits of interest in other populations.Estimates of narrow-sense heritability are useful for which of the following? O a) Determining the contribution of nonadditive alleles to phenotypic variance. O b) Determining what traits might be easy to selectively breed in a population. O c) Determining an individual organism's risk of inheriting a trait. O d) Determine the contribution of environment to a trait.A) If other factors are held constant, how does sample variance influence the likelihood of rejecting the null hypothesis and the measure of effect size (i.e. Cohen’s d)? B) Briefly explain what least square solution is.
- Create a fictional trait that Selection is acting against and describe: 1) What the trait consists of (i.e. a disorder, a physical characteristic, a behavior, etc). 2) The genotype or genotypes that express the trait 3) How the trait affects individuals with genotypes that do not express the trait (100 words minimum; no sources required)Two of the loci identified in the 2019 study were not identified in prior GWAS studies focused on this trait in people of European or African ancestry, and those studies identified some loci not identified in this 2019 study of Hispanic/Latino people. Which of the following statements is the most likely explanation for these discrepancies? O Some of the genes impacting prolonged QRS risk are different in people of different ancestry groups O People of Hispanic/Latino ancestry have a higher overall risk of prolonged QRS The methodology employed in this study was flawed People of Hispanic/Latino ancestry have a lower overall risk of prolonged QRSOutline experiments that would allow you to distinguish genetic and environmental influences on phenotypic variance.