A DNA sequence 5? ATGGGGGACACC 3? encodes the amino acids Met Gly Asp Thr. A mutation changes the sequence to 5? ATGAGGGGACACC 3? that encodes the amino acids Met Arg Gly His. What type of mutation has occurred?
A) frameshift mutation
B) missense mutation
C) silent mutation
D) nonsense mutation
A) frameshift mutation
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Select the exception. a. lancelet b. jawed fish c. jawless fish d. tunicate e. squid
An examples of a plant disease caused by an ascomycete is:
a. a microsporidial infection. b. corn smut. c. stem rust of wheat. d. histoplasmosis. e. chestnut blight.
Which step in the evolution of life is the most complex and probably occurred last?
A. Formation of amino acids B. Formation of protein–RNA systems C. Formation of membrane-bound protocells D. Spontaneous formation of organic compounds under abiotic conditions E. Formation of ATP
All of the following correctly match the term to its definition, EXCEPT
A. Anencephaly - Cerebral Agenesis B. Holoprosencephaly - Failure of Two Cerebral Lobes to Differentiate C. Hydrocephaly - Cranial Expansion Secondary to CSF Buildup D. Microcephaly - Small Head E. Schizencephaly - Clefts in Diencephalon