The syringe contains live R strain and heat-killed S strain pneumonia bacteria
A) the mouse will stay alive
B) live S strain bacteria will be detected in the mouse's blood.
C) no live S strain will be detected in the mouse's blood.
D) none of the above.
Answer: B) live S strain bacteria will be detected in the mouse's blood.
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Recent analysis indicates that the chytrids are the most primitive division of fungi and that a single event resulted in the loss of flagella in the more advanced fungi.
Answer the following statement true (T) or false (F)
The RNA molecules of an RNA world on early Earth may have been composed of bases other than A, U, G, and C
because ____.
a. DNA does not use all four bases b. these nucleotides will not form a double helix c. these nucleotides cannot be created in a Miller-Urey like experiment d. G is somewhat unstable in water e. C is somewhat unstable in water
As natural selection increases the frequency of one morphological form over another in the population, what changes at the genotypic level?
What will be an ideal response?
Which of the following pairs is mismatched?
a. gibbon?hominoid b. chimpanzee?anthropoid c. Old World monkey?anthropoid d. human?hominid e. gorilla?hominid