If the narrow sense heritability estimate of a trait in a population is low: there is a large amount of phenotypic variation. most of the phenotypic variation for the trait in the population may be due to environmental differences experienced by individuals most of the phenotypic variation for the trait in the population may be due to dominance effects or epistasis. there are no genes that code for the trait most of the phenotypic variation for the trait in the population may be due to additive genetic effects.
Added by Denise F.
Close
Step 1
Step 1: If the narrow sense heritability estimate of a trait in a population is low, it means that there is a large amount of phenotypic variation for the trait in the population. Show more…
Show all steps
Your feedback will help us improve your experience
John Nicolle and 55 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Both genetic and environmental factors can cause phenotypic variation in a population. Different alleles can confer different phenotypes, and different environments can also cause individuals to look or act differently. Only differences encoded in an individual's genes, however, can pass to its offspring and thus be a target of natural selection. Natural selection works by selecting for alleles that confer traits or behaviors, while selecting against those with qualities. stems from the chance occurrence that some individuals in the gene line have more offspring than others. When individuals leave or join the population, allele frequencies can change as a result of . to an individual's DNA may introduce new variation into a population. Allele frequencies can also alter when individuals do not mate with others in the group.
Bhavya L.
The extent to which an individual displays a trait phenotypes that can be influenced by many factors, including multiple genes and the environment, and chance events complex traits the average fraction of all alleles that two individuals share because they inherited them from a common ancestor trait values heritability genetic relatedness the fraction of total phenotypic variability of a trait due to genetic differences concordance LD blocks the extent to which two different individuals share a discrete trait stretches of genomic DNA within which clusters of linked alleles display linkage disequilibrium
Adi S.
Reasons that many phenotypes can't be predicted with certainty include: a. There is continuous variation in a gene's effects. b. A trait is shaped by more than one gene and by some aspect of a person's environment. c. The gene responsible is recessive. d. The trait is polygenic.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD