Uniparental disomy can arise through nondisjunction in _____
1.meiosis
2.the early embryo
3.the zygote
4.all of the choices
4
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What type of sensory receptors function in balance and sensing gravity?
A. mechanoreceptors B. photoreceptors C. nociceptors D. chemoreceptors
Some enzymatic receptors and most G protein-coupled receptors transmit the signal into the cytoplasm by utilizing other substances within the cytoplasm that are referred to as:
A. genes. B. intracellular receptors. C. second messengers. D. first messengers.
The evolutionary ancestors of mitochondria are believed to have been ancient ____
a. Archaea b. cyanobacteria c. proteobacteria d. green bacteria e. Gram-positive bacteria
Hormones of the posterior pituitary gland are transported to the hypothalamus by what unusual route?
A. the limbic system B. blood vessels C. axons D. the lymphatic system E. the hypopituitary shunt