Typical eukaryotic genomes are composed of ________ chromosomes.
A. multiple linear
B. multiple circular
C. a single circular
D. a single linear
E. both linear and circular
Answer: A
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Light from the left half of the visual field
a. strikes receptors on the right side of the right retina. b. strikes receptors on the right side of the left retina. c. generates signals that are sent back to the right visual cortex. d. does all of these. e. does none of these.
Multiple sclerosis is brought about by
a. destruction of cells in the basal ganglia. b. a viral infection of the meninges. c. a buildup of amyloid protein in the brain. d. CSF buildup in the ventricles. e. progressive destruction of the myelin sheath in the CNS.
Colonies of ants, termites, and some other insects, as well as naked mole rats, are __________ and thus include sterile workers who care for the reproducing members of the group.
Fill in the blank(s) with the appropriate word(s).
What is the effect of higher concentration of bicoid protein in part of a fruit fly embryo?
A) It lowers the chances of embryo survival. B) It will develop into the heart of the organism. C) It will develop into the posterior end of the organism. D) It will develop into the head end of the organism.