Which of the examples below are polymorphic traits? Select all that apply.
_____ Hair loss in malnourished, captive chimpanzees.
_____ A population of lilies that contains equal proportions of both blue and white flowering individuals.
_____ The A, B, and O blood types found in humans.
_____ Lactose tolerance and intolerance in humans.
_____ The change from white coat in winter to brown coat in summer in Arctic fox populations.
_____ Hair loss in malnourished, captive chimpanzees.
__X__ A population of lilies that contains equal proportions of both blue and white flowering individuals.
__X__ The A, B, and O blood types found in humans.
__X__ Lactose tolerance and intolerance in humans.
_____ The change from white coat in winter to brown coat in summer in Arctic fox populations.
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Which of the following statements best summarizes the Krebs cycle? a. One six-carbon glucose molecule is broken down to two three-carbon pyruvate molecules
b. NAD+ is regenerated in the final steps of this energy-releasing pathway. c. Acetyl-CoA is broken down to CO2, producing ATP and reduced coenzymes. d. Electrons are passed along an electron transfer chain, pumping protons across the inner mitochondrial membrane.
Transcription of the XIST gene results in ________
a. an active X chromosome b. carpel formation in Arabidopsis thaliana c. stamen formation in Arabidopsis thaliana d. a Barr body
Which of the following structures is found in the monocot seed but not in the eudicot seed?
A. pericarp B. radicle C. cotyledon D. plumule
The compound ethylene oxide is used in
A) sanitization. B) sterilization. C) antisepsis. D) degerming. E) disinfection.