Using the genetic code, predict what type of mutation has occurred in the hemoglobin sickle cell anemia allele. Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAACAGGUACCC
A. a point mutation, Val to Glu
B. a frame shift
C. addition of a new stop codon
D. a point mutation, Glu to Val
D. a point mutation, Val to Glu
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Which is NOT true about gene mutations?
a. All are transmitted to the next generation. b. They are rare but their rates can be predicted. c. Those with beneficial effects will be favored by natural selection. d. Many reduce an individual’s chance of surviving and reproducing. e. Those with neutral effects neither help nor hurt the individual.
_______ is a large protein that extends from Z line to M line in a sacromere and accounts for the passive tension response of a stretched muscle fiber.
A. myosin B. titin C. connexin D. actin
Archaeal cell walls have the same chemical composition as bacterial cell walls.
a. true b. false
Erosion of the gastrointestinal tract that results in a sore is called a ________
A) pore B) chancre C) peptic ulcer D) diverticulum