The horizontal platform that supports the microscope slide is the
a) stage
b) mechanical stage
c) mechanical stage control
d) none of the above
Answer: a) stage
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Which statement describes a similarity between meiosis and mitosis?
a. Both halve the chromosome number of the parent cell. b. Both produce 4 daughter cells. c. Crossing-over occurs in both. d. Both create genetically different daughter cells. e. DNA is replicated only once in both processes.
Which species would be considered more primitive based upon the structure of their limbs?
a. bats b. stem reptiles c. porpoises d. penguins e. birds
Two species regularly come into contact and form hybrids that have higher fitness than either of the parental species. What are some likely consequences of regular hybridization between these species? Check all that apply.
A. complete reproductive isolation of the two original species B. evolution of a third species C. reinforcement of prezygotic isolating mechanisms D. extinction of one or both of the parental species. E. increased gene flow between the parental species
Sulfur 35 (35S) is an isotope of 32S. These elements differ in their number of neutrons.
Answer the following statement true (T) or false (F)