How many sperm participate in the formation of fraternal twins?
A) two B) four C) one D) three
Answer: A
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Which of the following is not true of the translocation step of translational elongation in bacteria?
A. The deacylated tRNA is moved from the P site to the E site. B. EF-G binds to the A site, mimicking a EF-Tu-aminoacyl-tRNA complex. C. EF-G hydrolyzes GTP. D. The peptidyl-tRNA moves from the P site to the A site.
In Drosophila embryos, the anterior compartment of a segment overlaps with the posterior compartment of a parasegment
Indicate whether the statement is true or false
A horseshoe-shaped crown of tentacles used by many invertebrates for feeding is called a
A. protostome. B. fimbrium. C. lophophore. D. trochophore. E. rhizophore.
Briefly describe the ecology and trophic abundance of the Southern Ocean
What will be an ideal response?