The classical twin study is established as the definitive study design for investigating the relative importance of genetic and environmental factors to traits and diseases in human population. Monozygotic (identical) twins share all of their genes, while Dizygotic(fraternal) twins share only about 50 percent of them, the same as non-twin siblings. If a researcher compares the similarity between sets of identical twins to that of fraternal twins for a particular trait, then any excess likeness between the identical twins should be due to genes rather than environment. Write an information leaflet evaluating the benefits and dilemmas in the use of human twin studies to investigate the causes of variation.

Q: Many genetic disorders, such as cystic fibrosis and sickle-cell disease are due to mutations in a…

A: The frequencies of the alleles of a gene in a population is governed by the Hardy-Weinberg…

Q: Twin studies are often used in the research of human behavioral traits. Although helpful, there are…

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A: Hardy Weinberg equilibrium states that the genetic variation in the large population will remain…

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A: Blood group is a classic example of deviation from Mendelian inheritance. The gene for blood group…

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Q: of the following statements about quantitative genetics is TRUE?     Heritability is the measure…

A: Quantitative Genetics is the field of genetics that deals with the phenotypic variations of the…

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A: In genetic studies, the Hardy–Weinberg principle, also referred as the Hardy–Weinberg equilibrium,…

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Q: geneticist

A: PLeiotropy occurs when one gene influences ttwo or more traits. oN the other hand, polygenic traits…

Q: Threshold Model of complex traits. The reshold Model explains the tribution of some complex traits.…

A: Ans- discontinuous; maternal intelligent

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Q: What is concordance? For a polygenic or multifactorial trait such as behavior, why are identical…

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Q: New traits appear in most or all individuals in a population at the same time."   Please explain…

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Q: Many genetic disorders, such as cystic fibrosis and sickle-cell disease are due to mutations in a…

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Q: Create a fictional trait that Selection is acting against and describe: 1) What the trait consists…

A: Introduction Two alleles for a given gene in a diploid organism are expressed and interact to…

Q: "The use or disuse of a trait explains why it evolved or was lost."   Please explain in detail why…

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Q: The effect(s) of the environment on the variation seen in phenotypes include: influencing the…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.