Mole percent (G+C) of DNA is useful for determining relatedness at the ________ level.
A. class
B. genus
C. kingdom
D. None of the choices are correct.
Answer: B
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Why is double fertilization a critical process for feeding human populations?
What will be an ideal response?
In what field of study would scientists predict a protein's three-dimensional shape and how DNA mutations would affect protein function?
A. proteomics B. bioinformatics C. genomics D. All of the answer choices.
Which one of the following occurs when bright light hits the eye?
A) The muscle arranged circularly around the iris relaxes. B) The pupil dilates. C) The photoreceptors no longer respond to the light. D) The pupil decreases in size. E) The muscle arranged radially around the iris contracts.
The most abundant protein in mammals is collagen. This strong, ropelike molecule is particularly abundant in which tissue?
A. ligaments B. skeletal muscle C. spinal cord D. heart muscle