The central dogma refers to
A. passage of genetic information from RNA to specific proteins by transcription.
B. inheritance of DNA genetically controlled traits from parents to offspring in every organism.
C. passage of genetic information from DNA to RNA by translation.
D. the similarity of the energy molecule ATP to the nucleotides in DNA.
E. the flow of genetic information in cells, from DNA genes to specific proteins.
E. the flow of genetic information in cells, from DNA genes to specific proteins.
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Within the vestibular system of vertebrates, hair cells help detect movement when their cilia are bent by
A. otoliths. B. statoliths. C. the tectorial membrane. D. the basilar membrane. E. gravity.
In this diagram, which of the following numbers represents the actual event of egg activation?
A. I
B. II
C. III
D. IV
E. V
In eukaryotic cells, which can occur during the stages
of mitosis? a. the duplication of chromatids b. the replication of DNA c. synapsis and crossing over d. fragmentation and disappearance of nuclear envelope e. all of these
How many times could a human female ovulate in her lifetime?
a. about 40 b. about 400 c. about 4000 d. about 40 000