Imagine that horn color in Hodags (folkloric creatures of Wisconsin) is controlled by a single gene. You mate a Hodag homozygous for a bright orange horns (COCO) with a Hodag homozygous for ivory horns (CICI). Numerous offspring are produced, all with pale orange horns. This pattern of inheritance of horn color can best be described as
A. codominance.
B. environmental effects on phenotype.
C. recombination.
D. incomplete dominance.
E. complete dominance.
Answer: D
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Identifying carboxysomes in a bacterium suggests it
A) contains the reverse citric acid cycle. B) has a deficient Calvin cycle and accumulated CO2. C) is in a carboxylic acid rich environment and is storing excess quantities for potentially harsh conditions. D) will use the Calvin cycle convert the concentrated CO2 into biomass.
The structure that gets smaller and smaller as one progresses from bryophytes to vascular plants, then
seed plants, is the
a. sporangium. b. sporophyte. c. gametophyte. d. sperm cells. e. eggs.
Which of the following does not normally pass from the glomerulus into Bowman's capsule during filtration?
a. glucose b. proteins c. sodium ions d. urea e. water
An antigen is:
a. a phagocytic cell. b. used to combat infections. c. a molecule used by bacteria to destroy antibodies. d. any molecule that is recognized as foreign by the immune system. e. produced by a white blood cell.