In Pea Plants, Round Pea Texture Is Dominant Over Wrinkled

question 20

Multiple Choice

In pea plants, round pea texture is dominant over wrinkled texture. How can you obtain true-breeding pea plants having round peas with the least amount of work?

• A) Cross plants having round peas with plants having wrinkled peas. Select round pea plants from the progeny because they are now true-breeding.
• B) Cross plants having round peas with other plants having round peas. Do this for multiple generations.
• C) Cross plants having round peas with plants having wrinkled peas. Select round pea plants from the progeny and do a testcross to determine which parental plants were homozygous dominant.
• D) Cross plants having round peas with plants having wrinkled peas. This will tell you which round pea plants are homozygous dominant and are thus true-breeding.
• E) It's not possible. You can only get true-breeding plants that have wrinkled peas.

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