Color vision begins with stimulation of _____
a. hair cells c. cone cells
b. rod cells d. neuroglia
C
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A layer of dense connective tissue is indicated by
a. A. b. B. c. C. d. D. e. E.
Genetics studies of human populations have revealed that
A) it is nearly impossible to determine the relatedness of human populations. B) Homo sapiens probably did not evolve from primates. C) humans have very little genetic variation compared to other mammals. D) all humans are virtually identical. E) human populations vary tremendously at the level of DNA sequences.
DNA contains the nitrogenous base ________ instead of ________, which is found only in RNA.
A) a deoxyribose sugar; a ribose sugar B) uracil; thymine C) uracil; guanine D) thymine; uracil
Draw one eukaryotic chromosome as it would appear during interphase, during each of the stages of mitosis, and during cytokinesis. Also draw and label the nuclear envelope and any microtubules attached to the chromosome(s).