A group that contains species from separate evolutionary lineages is
a. paraphyletic.
b. polyphyletic.
c. monophyletic.
d. haplophyletic.
e. multiphyletic.
B
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Which one of the following represents a consequence of sequencing an organism's genome? (Choose all that apply)
A. An individual's "personal genome" can be sequenced and compared to the species standard to determine potential for disease inheritance. B. Genome sequences can be compared among species to determine evolutionary relationships. C. A sequenced genome can be annotated and search for open reading frames. D. Once an organism's genome is sequences, everything is known about that organism's protein expression and behavior.
Answer the following statements true (T) or false (F)
1. The complement strands of DNA have the same exact nitrogen base sequence, providing the semiconservative replication needed by cells. 2. Any change in a cell's DNA sequence is a mutation. 3. Change in a cell's DNA sequence is a common occurrence in the process of replication. 4. Each newly replicated molecule of DNA contains one conserved strand from the original DNA molecule. 5. A replicated chromosome consists of two sister chromatids.
When a person visits the doctor with a bacterial infection, one of the first lab tests on the patient will tell the doctor whether the bacteria are gram-negative or gram-positive. Why is this important information for a doctor to have before deciding on treatment?
What will be an ideal response?
Cyanobacteria are best described as ________.
A. all being obligate chemoheterotrophs B. all being obligate photolithoautotrophs C. some being photolithoautotrophs that can function as chemoheterotrophs in the dark D. None of the choices are correct.