Archaea differ from bacteria because archaea
a. lack peptidoglycan
b. lack nuclei
c. reproduce by binary fission
d. use organic compounds for food
Answer: a. lack peptidoglycan
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Thermus aquaticus was important in the
development of PCR in that it provided the necessary a. DNA polymerase. b reverse transcriptase. c. primers. d. DNA template. e. DNA ligase.
Assuming no crossing over between the gene in question and the centromere, when do alleles segregate during meiosis?
What will be an ideal response?
In fruit flies normal wings are dominant over vestigial wings. If a homozygous normal-winged fly and vestigial-winged fly were crossed, what would the phenotype of the fly offspring be?
A. all vestigial-winged B. all normal-winged C. three normal: one vestigial-winged D. one normal-winged: two half-winged: one vestigial-winged
One simple thing that you can do to help safeguard the environment is to eat a diet consisting only of
A) producers. B) primary consumers. C) secondary consumers. D) a mix of producers and consumers.