You are the research scientist charged with finding life on Mars. What would you look for?
1.water
2.something that creates energy
3.nutrients
4.something that uses energy, grows, and reproduces
4
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What is a possible explanation for why a population may not be in Hardy-Weinberg equilibrium?
A. There are more than two alleles for a trait. B. One allele for a trait is fixed in the population. C. Evolution is occurring on a trait in the population. D. Hardy-Weinberg does not work for all traits. E. The alleles for a trait being examined exhibit incomplete dominance.
Biochemical tests are no longer very important for the identification of enteric bacteria.
Answer the following statement true (T) or false (F)
Which of the following is not considered a plant organ?
A. leaf B. stem C. root D. flower E. seed
If two sister species on the phylogenetic tree above differ from the other two in a single character state (say dark or light fur), how many character state changes (evolutionary events) are needed to explain this pattern?
a. one c. three b. two d. four