The ABO blood group locus in humans provides an example of epistasis
Indicate whether the statement is true or false
FALSE
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The ultimate fate of the energy used by organisms is to
a. be converted into heat. b. be converted into offspring. c. be recycled repeatedly without loss. d. be used as metabolic heat. e. move into the environment by conduction.
Of all the different codons that exist, three of
them
a. are not used in any organisms. b. do not code for an amino acid. c. code for non-functional amino acids. d. signify ‘start here’. e. do more than one of these things.
One advantage that enabled the seed plants to greatly surpass the ferns in colonizing the land was the evolution of
A) spores. B) photosynthesis. C) sex without swimming sperm. D) a fibrous root system. E) a woody stem.
Which of the following features are found in invertebrates that enable them to exchange nutrients and gases without the use of a circulatory system?
A. exposure of the cells to the external or internal environment B. trilobed gastrovascular cavity C. coelomic fluid within the body cavity D. All of these features enable invertebrates to exchange gases and nutrients without a circulatory system.