To be useful for phylogenetic reconstruction, a taxonomic character must exhibit which of the following properties? Select all that apply
A. It must vary among the taxa being
analyzed, but not within individual taxa.
B. It must have a genetic basis.
C. It must be anatomical.
D. It must be molecular (DNA or protein).
E. None of these
A,B
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Fats and fatty acids
A. are insoluble in water. B. contain the same fatty acids. C. have the same number and location of C-C double bonds. D. have the same molecular length. E. are liquid or solid at room temperature, regardless of chemical composition.
If flipping two coins, what is the probability that both will land on “heads”?
a. 1/2 b. zero c. 1/4 d. 1/8
What are mycelia?
a. a network of microscopic interwoven filaments b. a strand of walled cells arranged end to end c. composite organisms consisting of a fungus and a single-celled photosynthetic species d. aquatic fungi that produce flagellated spores e. mutually beneficial relationships between fungi and plant roots
Answer the following questions true (T) or false (F)
1. Lobe-finned fish gave rise to tetrapods that successfully moved onto land. 2. There are currently at least 2 dozen species who are candidates for membership in the Hominini (human-like primate) group. 3. The hominid group of primates has existed on Earth for approximately 6—7 million years.