Homework SourseWhich of these statements about heritability is false Which
Which of these statements about heritability is false?
Which of these statements about heritability is false?
E. Heritability is not an indication of the mechanism by which genes control a trait.
A, C, E are correct. Between B and D
| A. Heritability values are accurate only for the environment and population in which they are measured. |
| B. Heritability is high when much of the phenotypic variation is produced by genetic variation and little is contributed by environmental variation. |
| C. Heritability for a given trait in a population can change if environmental factors change. |
| D.Traits with high heritability are not very responsive to environmental changes. |
| E. Heritability is not an indication of the mechanism by which genes control a trait. A, C, E are correct. Between B and D |
Solution
Answer: Heritability measures how much of a phenotypic variation in a population is caused by genetic variation. Apart from genetic variation, factors like environment can also lead to phenotypic variation. In this context lets examine the two statements you have a doubt about [ the other three statements are true as you correctly mentioned]
B. Heritability is high when much of the phenotypic variation is produced by genetic variation and little is contributed by environmental variation. This statement is also true and is almost same as the definition of heritiability.
D. Trait with high heritability are not very responsive to enivironmental changes. This statement is False. Although high heritablity implies less contribution of environmental factors it can\'t be generalised to say that the traits are not responsive to environmental changes!
So Statement \' D\' is False
