The DNA of an organism contains information that is used to sequence amino acids to form specific proteins. The existence of different organisms with very similar amino acid sequences is evidence of
A. a common ancestor
B. common adaptive behaviors
C. a similar diet
D. a similar environment
Answer: A. a common ancestor
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Humans with mutations in the AQP1 (aquaporin-1) gene do not produce the AQP1 protein. The absence of AQP1
causes an inability to ____ in these individuals.
a. produce concentrated urine b. recognize thirst c. make large volumes of dilute urine d. control sweating e. salivate
_____ is defined as a decrease in the response to an ongoing stimulus
a. Perception c. Sensory adaptation b. Visual accommodation d. Somatic sensation
The principal criterion used to classify fungi into divisions (the equivalent of phyla) is
a. the pigments found in the hyphal cells. b. the components of their cell walls. c. the biochemistry of their plasma membranes. d. the morphology of the sexual spore-bearing structures. e. the pattern of cilia on their external surfaces.
Genetic diseases transmitted only by a mother to both sons and daughters result from ____________________ genesFill in the blank(s) with the appropriate word(s)