Lophotrochozoa are animals that are organized circularly, so no matter how they are sliced in half longitudinally, mirror images are obtained.
a. true
b. false
Answer: b. false
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A mutant you made in the laboratory with 5-bromouracil suddenly regains the wild-type phenotype. You discuss this phenomenon with your advisor and colleagues, and they suggest you try transposon mutagenesis to avoid this problem and create stable mutants
Why would mutants created with 5-bromouracil be more likely to regain the wild-type phenotype than mutants created via transposon mutagenesis? What will be an ideal response?
Bryophytes are found:
A. where roots do not provide an advantage. B. throughout the world. C. where vascular plants do not have a competitive advantage. D. on rocks and trunks of trees. E. All of the answer options are true of bryophyte habitats.
The tough, pliable body of a lichen is called a(n)
a. soredium. b. arbuscule. c. thallus. d. sporangium. e. haustorium.
Chromatids are
a. attached at the centriole. b. a pair of chromosomes, one from the mother and one from the father. c. attached at their centromeres. d. identical until crossing over occurs. e. both attached at their centromeres and identical until crossing over occurs.