The stem-loop structure at the 3? end of a bacterial mRNA may function in
a. termination of translation.
b. regulating the frequency of translation.
c. regulating the frequency of transcription.
d. mRNA stability.
e. mRNA transport.
Ans: d
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Which of the following describe an aspect of epistasis?
_____ A situation where a single character is controlled by more than one gene. _____ A phenomenon where one gene masks the expression of another gene. _____ A pattern of inheritance in which modification of a gene during gamete formation permanently affects the phenotype of the individual. _____ A situation where one gene controls the expression of more than one character.
Birds are living representatives of the ____ lineage
a. anapsids b. archosaurs c. lepidosaurs d. synapsids e. crocodilia
What does the accompanying figure represent?
A) the average energy budget values between male and female sand crickets in low v. medium v. high food environments B) the average energy budget values between long-winged and short-winged crickets in low v. medium v. high food environments C) the average energy budget values for low v. medium v. high food environments in two different species of sand crickets D) the average energy budget values in low v. medium v. high temperature environments for long-winged v. short-winged sand crickets
All of the following cause developmental enamel defects, EXCEPT
A. Febrile Diseases B. Fluorosis C. Natal Teeth D. Tetracycline E. Treacher-Collins Syndrome