Mutation in an A group gene in Arabidopsis thaliana affects development in its flower's ____________.
A. first whorl only
B. second whorl only
C. third whorl only
D. first and second whorls
E. second and third whorls
Answer: D
Biology & Microbiology
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If a positive reaction is last observed at a dilution of 1:256, the titer is
A. 128. B. 1/512. C. 1/256. D. 256.
Biology & Microbiology
The different alleles in human blood type are a demonstration of ____
a. incomplete dominance only b. codominance only c. dominance and codominance d. dominance and incomplete dominance
e. dominance, codominance, and incomplete dominance
Biology & Microbiology
In plants, parenchyma cells typically secrete all of the following except:a
resins. b. hormones. c. starches. d. enzymes. e. nectar
Biology & Microbiology
There are normally one or two cases of measles per month in a particular city. However, in the month of September, there were 15 cases. Is this an epidemic?
A. Yes B. No
Biology & Microbiology