What is the genotype of “B”?
a. aa
b. Aa
c. AA
d. either aa or Aa
e. either Aa or AA
Answer: a
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Effector
Match the letter of each example from childbirth to the appropriate component of a positive feedback loop. A. pituitary gland secretes oxytocin, which acts on the uterus B. uterine contractions increase C. fetus is pushed against uterine opening D. receptors detect stretch E. brain receives and compares stretch information Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about positive feedback? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Mendel's results and conclusions were accurate but are seen differently today because we now realize that
A) pea color is actually more complex than the human visual system can perceive. B) pea inheritance is different from human inheritance. C) single-gene traits are usually influenced by the environment and other genes. D) he didn't count enough peas to draw conclusions.
If light were prevented from reaching the right side of both retinas, which of the following would
occur?
a. The right half of the visual field would be lost. b. Only the left cerebral hemisphere would be stimulated by the light. c. No information about the light would be carried in the left optic nerve. d. The left half of the visual field would be lost. e. Sight would be lost.
What is one type of cell that contains half the genetic information of an individual?
A) zygote B) gonad C) sperm D) fertilized egg