How do some corals reproduce asexually?
What will be an ideal response?
Corals can reproduce asexually by fragmentation. A piece of the coral will break off and can grow on its own into a new coral head.
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Warts are caused by
A. papillomavirus. B. parvovirus. C. adenoviruses. D. herpes virus.
Which of the following is not a category of symbiosis?
A. Parasitism B. Commensalism C. Communalism D. Mutualism
Which of the following is NOT a characteristic of a morphogen?
A. a morphogen will only elicit effects in areas where it is at a high enough concentration B. morphogens can be distributed asymmetrically throughout a cell C. morphogens can be secreted to act on neighboring cells D. morphogens can cause cell death E. morphogen gradients are always established in the oocyte
A researcher wants to insert a DNA fragment into a plasmid. Which enzyme will join the two DNA molecules
together?
a. primase b. ?-galactosidase c. restriction endonuclease d. DNA ligase e. DNA polymerase