__________ is the process by which a single-stranded RNA is synthesized using DNA as the template
a. transcription
b. reverse transcription
c. replication
d. transformation
e. None of the above
Ans: a
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Arrange in the correct sequence these components of the mammalian immune system as it first responds to a pathogen
I) Pathogen is destroyed. II) Lymphocytes secrete antibodies. III) Antigenic determinants from pathogen bind to antigen receptors on lymphocytes. IV) Lymphocytes specific to antigenic determinants from pathogen become numerous. V) Only memory cells remain. A) I ? III ? II ? IV ? V B) III ? II ? I ? V ? IV C) II ? I ? IV ? III ? V D) IV ? II ? III ? I ? V E) III ? IV ? II ? I ? V
Imagine a scenario in which a common population of animals is separated into two groups by a natural event. Over time, you might expect the two populations to become ______ genetically related. This process is known as ___________ speciation
A. less; sympatric B. more; sympatric C. less; allopatric D. more; allopatric
Interference is a phenomenon in which
A) no double crossovers occur among nearby genes. B) the number of observed double crossovers is greater than the number of expected double crossovers. C) the number of observed double crossovers is less than the number of expected double crossovers. D) the occurrence of one crossover interferes with the formation of another crossover nearby. E) Both C and D
What produces genetically unique daughter cells?
A) Meiosis B) Mitosis C) Both of these D) Neither of these