yellow normal-54 yellow opaque-19 white normal- 15 white opaque-8 1. Diagram the hybrid cross showing the segregation of genes responsible for endosperm type and endosperm color in corn. Indicate all applicable gene relationships. Indicate the genotypes
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.
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1. Diagram the hybrid cross showing the segregation of genes responsible for endosperm type and
endosperm color in corn. Indicate all applicable gene relationships. Indicate the genotypes,
ratios of the F2 generation using the branching method.
2. Interpret the result of your Chi-squared test.
1. How many gene pairs were
responsible for endosperm type and
endosperm color in corn?
2. What gene interaction was present
in the genes for the said traits?
3. What are the dominant phenotypes
for each trait?
4. What are the recessive phenotypes
for each trait?
5. Are the genes independently
segregating?
6. What are the possible genotypes of
the P1 and P2 that produced this F2
population?
7. Indicate your gene notation
3. Give the possible genotypes of each of the observed phenotypes in your sample. Determine the
possible genotypes of the parents of the F 2 population.
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Genotypes of the parents of the F 2 population: ____________________
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