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You are studying the inheritance of the recessive red-spotted (r) trait in pea plants. You identify a phenotypically wild-type plant that, when crossed to a red-spotted plant, produces 5/6 wild-type offspring and 1/6 red-spotted offspring. When you look at the chromosomes of the wild-type plant, you note that it contains an extra copy of chromosome 2, which is where the red-spotted locus is located.
a. What is the genotype of the wild-type plant? What gametes will this plant generate? What are the genotypes of the wild-type and red-spotted offspring?
b. You identify a plant that you think is genotypically Rrr. If you cross this plant to an rr individual, what proportion of wild-type and red-spotted offspring would you expect?
Absolute Advantage
The ability of a country, individual, company or region to produce a good or service at a lower cost per unit than any competitor.
Comparative Advantage
A principle that states a country or individual can produce a particular good or service at a lower opportunity cost than others.
Trade Patterns
The trends and tendencies in international trade, including what goods and services are traded, with whom, and in what direction.
Gain From Trade
The gain from trade refers to the increase in consumer and producer surplus that results from an open market, allowing countries or individuals to specialize in production and exchange.
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