Hybridization between populations upon secondary contact may result in ________
A) reinforcement of the two original species by way of pre- or post-zygotic isolating mechanisms
B) the creation of one or more new species as hybrids between the two parental species
C) the creation of a hybrid lineage that has higher fitness than either of the parental species
D) All of the above are possible.
E) None of the above are possible.
D
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Photorespiration occurs when stomata ________ the leaf cell
a. open and water molecules escape from b. open and nitrogen gas enters c. close and oxygen levels rise within d. close and carbon dioxide is unable to enter
When amino acids are degraded in cells, into what intermediate(s) of the aerobic respiration process are the carbon skeletons of amino acids primarily converted?
A. Pyruvate B. Pyruvate and Citric acid cycle intermediates C. Citric acid cycle intermediates D. Pyruvate and acetyl-CoA E. Acetyl-CoA
A wildlife biologist might be more likely than the average person to contract which types of atypical pneumonia?
A) tularemia, chlamydophila pneumonia, and psittacosis B) Legionnaire's disease and psittacosis C) Legionnaire's disease and Q fever D) Q fever, psittacosis, and tularemia E) walking pneumonia, chlamydophila pneumonia, and Legionnaire's disease
The stage that is most similar in all three groups is:
a. stage 1. c. stage 3. b. stage 2. d. stage 4.