__________ is a diagnostic tool that reveals missing or extra chromosomes and some structural changes in an individual's chromosomes.
Fill in the blank(s) with the appropriate word(s).
Karyotyping
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Eggs form in protective structures called ____ in bryophytes and seedless vascular plants
a. antheridium b. stoma c. strobilus d. sporangium e. archegonium
A person sensitive to bee stings may die minutes after a sting due to
a. a collapse of the immune system. b. a clogging of the capillaries. c. a release of excessive fluids from the capillary beds. d. respiratory distress caused by excessive mucus. e. the extremely sharp rise in blood pressure.
The brain can infer the pitch of a sound from the:a
number of hair cells that are stimulated. b. particular hair cells that are stimulated. c. intensity with which the hair cells are stimulated. d. intensity of the action potential produced by the stimulated hair cells. e. fluid movements of the semicircular canals.
Molecules of water stick to each other because:
A) covalent bonds form between the hydrogen atom of one molecule and the oxygen atom of another molecule. B) water molecules are nonpolar, and nonpolar molecules stick together. C) hydrogen bonds form between the hydrogen atom of one molecule and a hydrogen atom of another molecule. D) hydrogen bonds form between the hydrogen atom of one molecule and the oxygen atom of another molecule.