The Chloroplastida (green algae) include a wide diversity of forms ranging from unicellular to colonial individuals.
Answer the following statement true (T) or false (F)
True
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Why do some biologists use the name Craniata instead of the name Vertebrata?
A. Hagfish have a bony cranium but no vertebrae. B. Hagfish are too different from Cephalochordates to be included in that group. C. Hagfish are not represented by very many species, so cannot be given their own taxonomic grouping. D. Hagfish are understudied, so can only be grouped with other taxa based on their lack of characters.
This region exhibits 90% interference. How many double crossovers would be recovered in a three-point cross involving b, c, and sp out of 1000 progeny?
In Drosophila, the genes b, c, and sp are linked and arranged as shown below: b——30 m.u.——c——20 m.u.——sp A) 3 B) 6 C) 54 D) 60 E) 600
The interaction of sympathetic and parasympathetic
systems is best described as a. antagonistic. b. cooperative. c. overriding. d. synergistic. e. ineffective.
Most human pathogens are _________.
A) acidophiles B) neutrophiles C) alkaliphiles