Which of the following is NOT a unifying characteristic of diplomonads and parabasalids?
A) having flagella
B) lacking chloroplasts
C) lacking mitochondria
D) being multicellular
Answer: D
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Immunoglobulins and TCRs associate with adaptor molecules that have
A) a C domain. B) immune-based tyrosine-activation motifs (ITAMs). C) pathogen recognition receptors. D) toll-like receptors.
Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda are all lineages within the phylum
a. Rotifera. b. Mollusca. c. Platyhelminthes. d. Annelida. e. Nemertea.
how many oncogenic viruses have been discovered in humans?
What will be an ideal response?
Trait SpeciesABCDE100100210101310101411100511110611110The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, and a "1" indicates the derived condition. Which pair of species shares the fewest number of derived characters (synapomorphies)?
A. 6 and 3 B. 1 and 6 C. 4 and 6 D. 1 and 4 E. 2 and 3