In Tomatoes, Tall Is Dominant to Dwarf, and Smooth Fruits

question 227

Multiple Choice

In tomatoes, tall is dominant to dwarf, and smooth fruits are dominant to hairy fruits.A plant homozygous for both dominant traits is crossed with a plant homozygous for both recessive traits.The F₁ progeny are test-crossed with the following results in the F₂ progeny: 96 tall with smooth fruits; 94 dwarf with hairy fruits; 6 tall with hairy fruits; and 4 dwarf with smooth fruits.These data indicate that the genes are

• A) on different chromosomes.
• B) linked, and show 5 percent recombination.
• C) linked, and show 10 percent recombination.
• D) linked, and show 20 percent recombination.
• E) linked, and show 40 percent recombination.

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Definitions:

Marginal Benefits

The supplementary gratification or value gained from using or making one more unit of a product or service.

Marginal Costs

The escalation in total expenses resulting from the manufacture of an additional product or service unit.

Study Time

A period dedicated to academic work or learning outside of formal teaching sessions.

Marginal Analysis

A review of the extra advantages gained from an activity in relation to the extra expenses it generates.