Heritability | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-10

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Heritability


00:01:15 1 Overview
00:05:15 2 Definition
00:08:47 2.1 Example
00:14:04 2.2 Assumptions
00:14:46 3 Estimating heritability
00:18:19 3.1 Regression/correlation methods of estimation
00:18:37 3.1.1 Comparison of close relatives
00:19:19 3.1.1.1 Parent-offspring regression
00:20:11 3.1.1.2 Sibling comparison
00:20:56 3.1.1.3 Twin studies
00:22:30 3.2 Analysis of variance methods of estimation
00:22:49 3.2.1 Basic model
00:24:22 3.2.1.1 Intraclass correlations
00:26:16 3.2.1.2 The ANOVA
00:28:29 3.2.2 Model with additive and dominance terms
00:31:23 3.3 Linear mixed models
00:31:39 3.4 Genomic heritability
00:34:27 4 Response to selection
00:35:07 5 Controversies
00:37:21 6 See also
00:39:31 7 References



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SUMMARY
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Heritability is a statistic used in the fields of breeding and genetics that estimates the degree of variation in a phenotypic trait in a population that is due to genetic variation between individuals in that population. In other words, the concept of heritability can alternately be expressed in the form of the following question: "What is the proportion of the variation in a given trait within a population that is not explained by the environment or random chance?"Other causes of measured variation in a trait are characterized as environmental factors, including measurement error. In human studies of heritability these are often apportioned into factors from "shared environment" and "non-shared environment" based on whether they tend to result in persons brought up in the same household being more or less similar to persons who were not.
Heritability is estimated by comparing individual phenotypic variation among related individuals in a population. Heritability is an important concept in quantitative genetics, particularly in selective breeding and behavior genetics (for instance, twin studies).