Base substitutions of the (first/second/third) base of a codon frequently produce silent mutations.
Fill in the blank(s) with the appropriate word(s).
third
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Fungi that grow as yeasts at one temperature but as molds at another temperature are called ________.
A. saprobes B. spores C. pseudohyphae D. parasites E. dimorphic
How does gibberellic acid affect stem length in pea plants?
a. Plants with normal stem length have higher levels of gibberellic acid. b. Plants with short stem length have higher levels of gibberellic acid. c. Plants with normal stem length have the dominant allele Le that encodes an enzyme to degrade gibberellic acid. d. Plants with short stem length have the dominant allele Le that encodes an enzyme to degrade gibberellic acid. e. Plants with short stem length are homozygous recessive for the allele le that encodes an enzyme to degrade gibberellic acid.
How is neural crest different from endoderm, mesoderm and ectoderm?
What will be an ideal response?
An epidemiologist is investigating a new disease and observes what appear to be bacteria inside tissue cells in clinical samples from victims. The scientist wants to try to isolate the bacteria in the lab. What culture conditions are most likely to be successful?
A. culturing on blood agar plates B. inoculation of EMB plates C. incubation in an anaerobic culture system D. inoculation of cell cultures E. inoculation of a minimal medium broth