Certain Species of Lilies, If Eaten by Pregnant Ewes, Can

question 20

Short Answer

Certain species of lilies, if eaten by pregnant ewes, can cause the ewes to produce lambs with severe birth defects because the plants' cyclopamine can block embryonic response to Shh. This type of birth defect is a phenocopy of mutations in which genes?

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Definitions:

Singer

A singer is a person who uses their voice to produce musical sounds through modulation in tone and pitch, performing alone or with other musicians.

Process

A series of actions or steps taken in order to achieve a particular end.

Arousal Theory

Theory of motivation in which people are said to have an optimal (best or ideal) level of tension that they seek to maintain by increasing or decreasing stimulation.

Optimal

The most favorable condition or level for growth, effectiveness, or well-being.