The Trait for Medium- Sized Leaves in Iris Is Determined

question 25

Multiple Choice

The trait for medium- sized leaves in iris is determined by the genetic condition PP'.Plants with large leaves are PP,whereas plants with small leaves are P'P'.The trait for red flowers is controlled by the genes RR,pink by RR ',and white by R'R'.A cross is made between two plants each with medium- sized leaves and pink flowers.If they produce 320 seedlings,what would be the expected phenotypes,and in what numbers would they be expected? Assume no linkage.

• A)35 large,red; 35 medium,red; 35 small,red; 35 large,pink; 35 medium,pink; 35 small,pink; 35 large,white; 35 medium,white; 35 small,white
• B)20 large,red; 40 medium,red; 20 small,red; 80 large,pink; 40 medium,pink; 40 small,pink; 20 large,white; 40 medium,white; 20 small,white
• C)40 large,red; 20 medium,red; 40 small,red; 20 large,pink; 80 medium,pink; 20 small,pink; 40 large,white; 20 medium,white; 40 small,white
• D)20 large,red; 40 medium,red; 20 small,red; 40 large,pink; 80 medium,pink; 40 small,pink; 20 large,white; 40 medium,white; 20 small,white
• E)80 large,red; 40 medium,red; 20 small,red; 40 large,pink; 20 medium,pink; 40 small,pink; 20 large,white; 40 medium,white; 20 small,white

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Definitions:

Logistic Regression

A statistical approach for forecasting the result of a binary variable using one or more predictor variables.

Probability

The measure of the likelihood that an event will occur, often expressed as a number between 0 and 1.

Failure

The state or condition of not meeting a desirable or intended objective, often used in educational, technical, and personal contexts.

Unfair Die

A die that has been altered or designed in such a way that it does not have an equal chance of landing on each of its faces.