What is the best definition of a population?
a. a group of individuals of two different
species that interact with each other
b. a group of interbreeding individuals from
different geographical regions
c. a group of potentially interbreeding
individuals of the same species regardless
of where they live
d. a collection of different species living in the
same area at the same time
e. a group of interbreeding individuals of the
same species in a given area
E
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________ mutations occur in the promoter or operator region of a gene or set of genes and affects the expression of the downstream genes without affecting the amino acid sequences of the gene products.
Fill in the blank(s) with the appropriate word(s).
Lobsters and clams have _____ in common with fishes
a. external gills b. a two-chambered heart c. internal gills d. skin as a respiratory surface e. an open circulatory system
The reaction C6H12O6 + O2 ® CO2 + 6H2O is which type of chemical reaction?
A. hydrolysis B. transfer C. dehydration synthesis D. oxidation-reduction
Oxidation is the process by which oxygen atoms are added to a target molecule. Generally, the atom that is oxidized will experience which of the following with respect to the electrons in its outer shell?
(a) a net gain (b) a net loss (c) no change (d) an equal sharing