The narrow-sense heritability of the number of peas perpod in a population of sugar snap peas is 0.5. The meanof the population is 6.2 peas per pod. A plant breederselects one plant with 6.8 peas per pod and crosses witha second plant that has 8.0 peas per pod. What is the expected numbers of peas per pod among the offspring ofthis cross?
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
The narrow-sense heritability of the number of peas per
pod in a population of sugar snap peas is 0.5. The mean
of the population is 6.2 peas per pod. A plant breeder
selects one plant with 6.8 peas per pod and crosses with
a second plant that has 8.0 peas per pod. What is the expected numbers of peas per pod among the offspring of
this cross?
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