What are the upper chambers of the heart called?
A. ventricles
B. septa
C. AV valves
D. auricles
E. atria
Answer: E
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True or False: Although most behaviors are influenced by multiple genes, in Drosophila foraging behavior is influenced by a single gene with two different alleles (for S and for R)
A. true B. false
Two alleles of gene C control hair color in horses: C¹ and C². Horses homozygous for allele C¹ are red, heterozygotes are yellow, and C² homozygotes are cream. In the offspring of matings between heterozygotes, what phenotypic ratio is expected?
A) 2 yellow: 1 red B) 3 red: 1 cream C) 1 red: 2 yellow: 1 cream D) all red E) 9 red: 3 yellow: 4 cream
Which of the following describes the order of emergence of various organisms on Earth?
a. land plants, first prokaryotes, animals, first eukaryotes, humans b. first prokaryotes, first eukaryotes, land plants, animals, humans c. animals, first prokaryotes, first eukaryotes, land plants, humans d. humans, animals, land plants, first eukaryotes, first prokaryotes
Your senior thesis project involves working out the taxonomy of Florida skinks. To accomplish this you examine skink specimens for morphological differences compare nucleotide and amino acid sequences and observe the skinks reproductive behavior and habitat types. Once you have completed the taxonomy and written the thesis you give it to your professor for comments. She tells you that you did a great job and should try to get your work published. However she suggests you indicate in the introduction what species concepts you used to make your classifications. What statement would you add?
A. Taxonomic determinations were made based on the general lineage species concepts. B. Taxonomic determinations were made based on the ecological species concepts. C. Taxonomic determinations were made based on the evolutionary lineage species concepts. D. Taxonomic determinations were made based on the biological species concepts.