Every living organism must have ____
a. at least one cell
b. a nucleus
c. a cell wall
d. mitochondria
e. oxygen
ANSWER: a
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Of the phage listed below, which creates mutations in its host genome via transposition?
A) lambda B) M13 C) Mu D) T7
The size range of most plant and animal cells is ________.
A) 1—10 nm B) 1—5 ?m C) 10—50 ?m D) 0.1—0.5 mm E) 50—100 mm
The genes that determine the development of limbs in lizards as opposed to snakes are called hox
genes.
Indicate whether the statement is true or false.All of the following statements concerning the evolutionary species concept are true EXCEPT
A. an evolutionary "family tree" is used to identify species based on a common ancestor. B. it relies on identification of certain morphological traits to distinguish one species from another. C. abrupt changes in traits are indicative of the evolution of a new species in the fossil record. D. it requires that the members of a species share a distinct evolutionary pathway.