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What is Genetic Ratios and Ascertainment Methods about?

This document discusses genetic ratios and how ascertainment methods can impact expected ratios. It provides examples of: 1) Common genetic ratios like 1:1 and 3:1 from different types of marriages. 2) How pooling family data can deviate from ideal ratios due to ascertainment biases. 3) Examples of how complete versus truncated or single ascertainment methods may skew ratios, such as a complete ascertainment of a trait yielding a 4:2 ratio but ascertainment through affected girls yielding a 6:2 ratio.

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EN