In an evolutionary sense, ________ is the transfer of alleles from one population to another
Fill in the blank(s) with correct word
migration
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DNA is favored as the storage molecule of genetic information because it ____ than RNA
a. has more nucleotides b. has greater chemical stability c. can assemble into longer coding sequences d. has more nucleotides and greater chemical stability e. has greater chemical stability and can assemble into longer coding sequences
What process delivers organic nutrients to abyssal plains and trenches near continental shelves?
a. Decomposition b. Biological magnification c. Turbidity currents d. Marine snow
Which piece of evidence best supports the endosymbiotic theory of organelle evolution?
A. The inner membrane of a mitochondrion and chloroplast resembles a eukaryotic cell while the outer membrane resembles that of a bacterial cell. B. The outer membrane of a mitochondrion and chloroplast resembles a eukaryotic cell while the inner membrane resembles that of a bacterial cell. C. Mitochondria and chloroplasts are much larger than present day bacteria. D. Both mitochondria and chloroplasts divide by mitosis.
If a person is bitten by a highly venomous snake and receives a dose of venom sufficient to kill several people, that person does not have the time to build up his immunity over the next week to neutralize the venom. However, hospitals carry "antivenin" made from injecting horses with small-to-larger dosages of snake venom, and then harvesting the antibodies from the horse plasma. This is an example of
A. passive immunity. B. receiving high levels of complement. C. receiving high levels of interferon. D. developing an inflammatory response to increase the IgG production. E. active immunity.