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- Most sheep have the ability to grow coats of wool that vary in their thickness depending on the ambient temperatures that they experience. This is an aspect of phenotypic plasticity, variability in the phenotype that can be triggered by the experiences of the organism. When referring to a sheep that has grown more wool in a cold climate than its parents living in a warm one, what term best describes this? (NOTE: look back at chapter 25, if you are having trouble remembering) O Adaptation Intersexual selection Intrasexual selection Acclimitization Gene FixationWrite a short explanatory essay on the following statement: “Incases of genetically programmed phenotypic plasticity, naturalselection acts on the norm of reaction. Thus the norm of reactionas a whole—rather than any one phenotype—determines ifselection is positive or negative.”Give typing answer with explanation and conclusion What is a phenotype and how is it determined? What is phenotypic plasticity? Over what time scale does phenotypic plasticity act? Why would animals want to have plastic phenotypes?
- The link between SCT and increased risk of death has been documented. Is that not enough to warrant testing, as long as a link exists? Couldn't one argue that it would instead be neglectful to NOT test for this trait since we do know that such a link exists?What are phenocopies? give atleast 3 specific examplesMonozygotic twins: Question 2 options: a) Share 50% of their genetic material and if one twin has schizophrenia the risk of the other having the illness if 40-50% b) Share 100% of their genetic material and if one twin has schizophrenia, the risk of the other having schizophrenia is 10-15% c) Share 100% of their genetic material and if one twin has schizophrenia, the risk of the other having schizophrenia is 40-50% d) Share 50% of their genetic material and if one twin has schizophrenia the risk of the other having the illness is 10-15%
- One of the models for behavioral traits in humans involves a form of gene interaction known as epistasis. What is epistasis?Select all true statements about recessive alleles. 1) Recessive alleles can be hidden by dominant alleles 2) Recessive alleles are weaker than dominant alleles 3) It is possible for a recessive allele to be the most common allele in a population 4) Recessive alleles code for functioning proteins 5) Recessive alleles usually code for proteins that do not function 6) Dominant alleles can mask the presence of a recessive allelePhenotypic plasticity is variation caused by what? Can genotypes have variations or different reaction norms?