In humans, separation of the cells at the two-cell state following fertilization may lead to the production of twins, which in this case would be ________.
A) dizygotic
B) identical
C) fraternal
D) of different sexes
B) identical
You might also like to view...
All MRI contrast agents are paramagnetic or superparamagnetic.
Answer the following statement true (T) or false (F)
________ hormones bind with an intracellular receptor to form a ________, which activates specific genes.
A. Nonsteroid; DNA-mRNA complex B. Nonsteroid; receptor-hormone complex C. Steroid and thyroid; DNA-mRNA complex D. Steroid and thyroid; receptor-hormone complex
The specialized vessels that carry blood containing releasing hormones from the brain to their target gland make up the
A. hypothalamus-pituitary portal system. B. circle of Willis. C. common jugular veins. D. hepatic portal system. E. adrenal regulatory pathway.
Factors that impact stroke volume and cardiac output include ____________________.
ion concentration hormone concentrations autonomic activity all choices are correct none of the choices are correct