Which of the following best describes the broad-sense heritability of a trait? Variance in the trait that is due to genetic effects (VG) The proportion of phenotype variance that is due to genetic effects (VG/Vp) The proportion of phenotype variance that is due to genetic effects (Vp - VG) The proportion of phenotype variance that is not due to genetic effects (Vp - VE) the degree to which genes influencing a trait are passed from offspring to parents To

Which of the following best describes the broad-sense heritability of a trait? Variance in the trait that is due to genetic effects (VG) The proportion of phenotype variance that is due to genetic effects (VG/Vp) The proportion of phenotype variance that is due to genetic effects (Vp - VG) The proportion of phenotype variance that is not due to genetic effects (Vp - VE) the degree to which genes influencing a trait are passed from offspring to parents To

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter18: Genetics Of Behavior

Section18.2: Models, Methods, And Phenotypes In Studying Behavior

Problem 1EG: What role would twin and adoption studies play in selecting a model for determining whether...

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Which of the following statements about quantitative genetics is TRUE? Heritability is the measure of the proportion of an individual's phenotype that is due to genetics. QTL mapping provides an overestimate of the number of genes contributing to a quantitative trait. A threshold trait is measured in whole numbers. An H2 value (broad-sense heritability) that approaches 0.0 means that almost all the phenotypic variation is determined by genetic differences. The h2 (narrow-sense heritability) value is a prediction of the impact that selection may have in altering an initial population by artificial selection.
Are the following statements regarding heritability true or false?A. Heritability applies to a specific population raised in aparticular environment.B. Heritability in the narrow sense takes into account all types ofgenetic variance. C. Heritability is a measure of the amount that genetics contributesto the outcome of a trait.
Two inbred lines of sunflowers (P1 and P2) produce different total weights of seeds per flower head…. Show more Two inbred lines of sunflowers (P1 and P2) produce different total weights of seeds per flower head. The mean weight (in grams) and the variance of seed weights in different generations are listed in the table below. 1. Use the information to determine VG, VE and VP for this trait. 2. Determine H 2 for this trait. Generation Mean Weight/Head (g) Variance P1 105 3.0 P2 135 3.8 F1 122 3.5 F2 125 7.4 •
Heritability of a biological trait is best defined as which of the following? a. The proportion of variation in a trait that is specifically due to genes. b. The proportion of variation in a trait that is due to the environment and genes c. The proportion of variation in a trait that is only due to dominant additive genetic variance. d. The proportion of variation in a trait due to developmental effects.
What do we use to estimate the heritability of a trait in this exercise? Group of answer choices The slope of the line of best fit to the graph of mid-parent dots versus mid-offspring dots. The mid-parent dot number. The y-intercept of the line of best fit to the graph of mid-parent dots versus mid-offspring dots. The R2 value of the line of best fit to the graph of mid-parent dots versus mid-offspring dots.
Draw the expected phenotypic variance of a trait encoded by 5 genes with 25% environmental variance vs. a trait encoded by 5 genes with 2% environmental variance.
The broad-sense heritability of a trait is estimated at 0.6. If the total phenotypic variance is estimated at 30.0, what is the genetic variance? 12 18 36 5 9
QTL mapping and GWA (association) mapping are two different methods used to identify genes that affect complex traits. For each of the following statements, choosewhether it applies to QTL mapping, association mapping, or both.whether it applies to QTL mapping, association mapping, or both.
The leaf width of a particular plant has an environmental variance of 2.3 cm, an epistatic variance of4.8 cm, a dominance variance of 1.6 cm, and an additive variance of 3.8 cm. Determine, and interpret,the broad sense and narrow sense heritability.
What does a heritability score tell us about HOW genes and environment interact in an individual to produce a trait?
Why are monozygotic twins who are reared apart so useful in the calculation of heritability? What assumption is being made about their respective environment?
Which of the following is true of continuous variation? The expression of one gene may be masked by the expression of another. The expression of one gene may be masked by the expression of another. Traits vary in small gradations and span a spectrum of possibilities. Traits vary in small gradations and span a spectrum of possibilities. Genes may affect multiple, seemingly unrelated aspects of phenotype