As DNA technologies have advanced, molecular comparison has become the more popular choice when constructing phylogenies. What is the science of using molecular data in taxonomy and biogeography called?
a. bioinformatics
b. molecular biology
c. molecular systematics
d. biomedical engineering
c. molecular systematics
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Which of the following is not true of the three operators of the lac operon?
A. One of the operators is contained within the lacZ gene. B. All three operators are bound simultaneously by the Lac repressor to repress the expression of the operon. C. The DNA between the operators bound by the Lac repressor is looped out to sterically hinder RNA polymerase. D. Two of the three operators are upstream of the transcriptional start site.
Trace a drop of blood from the right atrium through the entire circulatory system then back to the right atrium. Include
in your answer major heart structures and vessels. What will be an ideal response?
Two species have homologous structures. What can we infer?
a. The structures are identical. b. The structures have the same function. c. The species have very different ancestors. d. The species are related by a common ancestry. e. The structures have the same function and they are identical.
A prokaryotic cell that contains branched-chain hydrocarbons linked to glycerol belongs to an archaean.
Answer the following statement true (T) or false (F)