Which occurrence is when an individual inherits a dominant gene but does not fully express the dominant phenotype?
A. incomplete penetrance
B. incomplete dominance
C. polygenic inheritance
D. pleiotropy
Ans: C. polygenic inheritance
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Indicate whether the following statements are true or false. ____ All animals have a nervous system. ____ All animals sense and respond to the environment. ____ It is necessary to have a nervous system to sense and respond to the environment
What will be an ideal response?
In mollusks, ctenidia are necessary for which function?
a. breathing b. excretion c. reproduction d. locomotion
Four of the five choices listed below are types of
prezygotic isolating mechanisms. Select the exception. a. temporal b. hybrid inviability c. mechanical d. ecological e. gamete
Evolution is a process which is moving towards a defined goal.
a. true b. false