How many sperm participate in the formation of fraternal twins?

A) two B) four C) one D) three


Answer: A

Biology & Microbiology

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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.

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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

Biology & Microbiology

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.

Biology & Microbiology

Briefly describe the ecology and trophic abundance of the Southern Ocean

What will be an ideal response?

Biology & Microbiology