You are an experienced naturalist and biologist and you observe two birds mating that you do not believe to belong to the same species
The eggs from this breeding do not hatch, and
when you obtain one of the eggs, you find embryonic development stopped not long after
fertilization. Which of the following conclusions is supported by these observations?
A. Pre-zygotic isolation prevented successful
reproduction.
B. Post-zygotic factors prevented successful
reproduction.
C. Behavioral isolation prevented successful
reproduction.
D. Temporal isolation prevented successful
reproduction.
E. This is evidence to suggest the two types
of birds are a single species.
B
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In what order will you encounter the following structures if you examine the human ear from the outside inward?
A. tympanic membrane ® malleus ®incus ® stapes ® oval window ® cochlea B. tympanic membrane ® incus ®malleus ® stapes ® oval window ® cochlea C. tympanic membrane ® stapes ®malleus ® incus ® oval window ® cochlea D. tympanic membrane ® malleus ®incus ® stapes ® cochlea ®oval window E. tympanic membrane ® oval window ® malleus ®incus ® stapes ® cochlea
What is the result of meiosis?
a. 2 diploid cells b. 4 diploid cells c. 2 haploid cells d. 4 haploid cells e. 1 haploid cell
Most amino acids are specified by more than one codon. Indicate whether the statement is true or false
Saliva contains the hydrolytic enzyme, salivary amylase, which initiates the breakdown of the polysaccharide ________ into the disaccharide, maltose.
A. starch B. glucose C. cellulose D. fructose E. sucrose