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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Definitions:

Pre- And Post-Test

Evaluation methods used before and after a specific intervention or teaching period to assess the effectiveness of the intervention or the amount of learning that has occurred.

Duration Recording

A recording technique that is used for measuring how long behavior lasts. It is most appropriate for behaviors that occur infrequently but continue for some length of time or for behaviors that occur at a high rate so that one episode blends into the next.

Frequency Recording

A method of data collection in behavior analysis that involves counting the number of times a specific behavior occurs within a set period.

Time Sampling

A behavioral observation technique that involves observing the presence or absence of behaviors within specific time intervals.