The following variances were calculated for two traits in a herd of hogs.
Calculate broad-sense (H²) and narrow-sense (h²) heritabilities for each trait in this herd.

Question

The following variances were calculated for two traits in a herd of hogs.

Table showing phenotypic, genetic, and additive variances for back fat and body length traits in a hog herd.

Calculate broad-sense (H²) and narrow-sense (h²) heritabilities for each trait in this herd.

Accepted Answer

Hey everyone. Let's take a look at this question together. Which of these assertions regarding heritability is true. So let's take a look at the following assertions and recall what we've learned about heritability to figure out which one is true. Starting off with answer choice A. It says the proportion of additive Jenna typical variants to for in a typical variance is measured by broad sense heritability. Immediately we know that this one is incorrect because that proportion of this additive genetic variance to fanatic variance is not measured by broad sense heritability and is measured by narrow sense heritability. So answer choice A. Is incorrect because we know that the narrow sense heritability formula is that H. Two equals Visa A. Over Visa V. And not the broad sense heritability. Answer choice B says twin studies can provide insight into the narrow sense of human trait heritability. This one is also incorrect because twin studies can provide insight into the broad sense of human trait heritability. Because this additive genetic variance and phenotype variance from the first answer choice, that is the narrow sense heritability can't be measured in twins. So answer choice B. Is incorrect, which means we can actually cross off answer choice D. And that means that answer choice C. Is our correct answer by process of elimination. As well as the fact that we know heritability measures the extent to which genetic variants contributes to the total fanatic variation because we know that heritability is that ratio of that genetic variation to the total fanatic pick variation or a trait or character in a population. So answer choice C. Is the correct answer. I hope you found this video to be helpful. Thank you and goodbye.

The following variances were calculated for two traits in a herd of hogs.

Calculate broad-sense (H²) and narrow-sense (h²) heritabilities for each trait in this herd.

Verified video answer for a similar problem:

Key Concepts

Phenotypic Variance (V_P)

Genetic Variance (V_G) and Additive Genetic Variance (V_A)

Broad-sense (H²) and Narrow-sense (h²) Heritability