Farmer John decides to increase the weight of the eggs produced by his chickens. The average weight of his eggs is 50 grams. He knows that the heritability of egg weight is 0.5. He selects for chickens producing eggs that are 64 grams. The expected average weight of the resulting eggs is: 59 57 54 55 56
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.
Farmer John decides to increase the weight of the eggs produced by his chickens. The average weight of his eggs is 50 grams. He knows that the heritability of egg weight is 0.5. He selects for chickens producing eggs that are 64 grams. The expected average weight of the resulting eggs is:
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59 |
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57 |
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54 |
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55 |
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56 |
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