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You are conducting a twin study to estimate the heritability of a particular trait and have found that monozygotic twins have a concordance of 75%. Using ONLY this information, does this trait show high, low, or unknown heritability? Write no more than two sentences to justify your conclusion, and/or specify how to use additional information to determine heritability. ITRE

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Answer:

The correct answer is "high heritability".

Explanation:

Concordance, is a term used in genetics to describe the probability that one of the twins have certain trait if his brother certainly has it. A high percentage of concordance, such as 75%, is translated into high heritability since monozygotic twins have identical genomic sequences. Additional information to determine heritability will be to study the exposure to similar environmental conditions, since environment can also affect the presence of certain traits.

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