In Maize,overall Kernel Color Is Controlled by Both the Endosperm

question 30

Essay

In maize,overall kernel color is controlled by both the endosperm and the aleurone colors.The endosperm color is yellow when the allele Y is present.In the homozygous recessive (y/y)condition the endosperm is white.The Y alleles are masked by the presence of a colored aleurone.The R and Pr genes control the aleurone color.The allele Pr interacts with the R allele to produce a purple color,whereas in the recessive condition (pr/pr),the gene interacts with the R allele to produce a red color.If the R allele is present in the homozygous recessive state (r/r)then the aleurone will be colorless,allowing the endosperm color to be expressed.Two fully heterozygous individuals are crossed.Give the phenotypes,and frequency of occurrence,of the F2 offspring.

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Definitions:

Privity of Contract

A doctrine in contract law that restricts the rights or duties under a contract to the parties that agreed to it.

Property Tax

A levy on property that the owner is required to pay based on the value of the property.

Lessee

A person or entity that holds the lease of a property; essentially, a tenant who has the right to use property owned by another according to the terms of a lease agreement.

Privity of Contract

A principle stating that contracts cannot bestow rights or impose obligations on anyone who is not a party to the contract.