Consider the cladogram shown. Based on this cladogram, which species has the greatest number of ancestral character states (plesiomorphies)?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
Answer: A
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Use the following information to answer the following question(s): You wake up one morning feeling slightly under the weather. A close family member enthusiastically suggests that you take some Echinacea, an herb commonly used as a cold remedy. You then decide to design an experiment to test Echinacea and see if this claim is true. You think, "If taken at the beginning of a cold, Echinacea will reduce cold symptoms."Your statement, "If taken at the beginning of a cold, Echinacea will reduce cold symptoms," is called a(n) ________.
A. observation B. theory C. conclusion D. hypothesis
A cDNA library differs from a genomic DNA library in which way?
A. It consists solely of RNA molecules B. It contains many copies of the gene of interest C. It contains only coding sequences, not introns D. It is typically 10-100 times the size of a DNA library
If similarities between two structures in different organisms reflect independent evolution, these structures are
A. analogous. B. vestigial. C. homeotic. D. homologous. E. heterologous.
DNA is found in the ___ of the cell.
What will be an ideal response?