If the codon AAA is changed to AAG, it still codes for the amino acid lysine; this is an example of a
A) silent mutation.
B) nonsense mutation.
C) frameshift mutation.
D) dimer formation.
E) missense mutation.
A
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Paired, fleshy extensions of the body wall in bristle worms that are used for locomotion and gas
exchange are called
a. metanephridia. b. parapodia. c. septa. d. clitella. e. setae.
How many origins of replication does the E. coli chromosome contain?
A) none B) 1 C) 2 D) 3 E) many
Many soil fungi take part in a mutualistic relationship with plant roots, known as _____
a. mycelium b. mycorrhiza c. mycotoxin d. lichen e. hypha
Which of the following statements is FALSE
about cowbirds? a. Their host relationship is similar to cuckoos. b. They are insect-eaters. c. Females can lay thirty eggs in a season. d. Cowbird hatchlings are recognized as imposters by host parents. e. They now parasitize at least fifteen species of native North American birds