The genes for light eyes lt; light and straw bristles stw; straware tightly linked on chromosome 2 in Drosophila melanogaster.The Malpighian tubes of lt larvae and adults are maternally affected in that Malpighian tubes of lt/lt organisms,whose mothers were lt+/lt and have more yellow pigment than those from lt/lt mothers.There is no maternal effect associated with the straw locus.Give the phenotypes of the offspring from the following crosses. 
Definitions:
Trade
An exchange of goods or services between two or more parties.
Production Possibilities
The various combinations of goods and services that can be produced from a fixed set of resources.
Specialization
Specialization involves focusing on a narrow area of knowledge or skill, enabling individuals or firms to produce goods or services more efficiently.
Trade
The exchange of goods and services between people or entities, either within an economy or between economies.
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