Complex phenotypes that are shaped by more than one gene as well as by some aspect of an individual’s environment represent a(n)
1.multifactorial trait.
2.polygenic trait.
3.codominant trait.
4.autosomal trait.
5.recessive trait.
1
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At which of the following time points in an action potential is a positive feedback process occurring in a neuron?
A. When the neuron is at rest. B. As the neuron is being depolarized and passes the threshold potential. C. After the peak depolarization of the action potential when it is rapidly repolarizing. D. During the undershoot phase when the neuron is slightly hyperpolarized relative to the resting potential. E. A positive feedback process is occurring at all the time points given.
What is apotosis?
a. a process in development where cells die back b. the condition of being without a particular sex c. a structure in birds and some lizards that functions as a penis d. a cellular process whereby a cell reproduces without mitosis or meiosis e. the term given to describe the formation of germ layers
A mole becomes suspicious when it is greater than 6 mm in diameter. How big is 6 mm approximately?
A. about the size of a pencil eraser B. about the size of a quarter C. just barely visible, about the size of a pin prick D. about the size of a nickel E. about the same as one of the letters in this question
Which of the following represents the lowest degree of certainty?
a. hypothesis b. conclusion c. fact d. principle e. theory