Analysis of the genome and transcriptome of the highly radiation resistant bacterium Deinococcus radiodurans has revealed all of the following EXCEPT ________.
A. it has more DNA repair genes than E. coli
B. genes whose products are involved in cell wall metabolism and cellular transport are dramatically up-regulated after irradiation
C. its genome consists of two circular chromosomes and two plasmids
D. genes whose products are involved in DNA replication and recombination are dramatically up-regulated after irradiation
Answer: A
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The magnitude of heritability is an intrinsic property of a trait
A. true B. false
The large, fluid-filled spaces within the brain are called the:
a. choroid plexus. b. ventricles. c. meninges. d. pia mater.
Currently, two extant elephant species (X and Y) are classified in the genus Loxodonta, and a third species (Z) is placed in the genus Elephas. Thus, which statement should be true?
A) Species X and Y are not related to species Z. B) Species X and Y share a greater number of homologies with each other than either does with species Z. C) Species X and Y share a common ancestor that is alive today. D) Species X and Y are the result of artificial selection.
Chloroplasts and mitochondria are involved in a redox cycle because
What will be an ideal response?