State the importance of the following responses
(a) chemo-taxis in pollen grains
(b) positive rheotaxis in butterfly

Organize the word parts according to where they appear in a medical term.

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic.

Which kind of mutation has occurred when the codon for an amino acid is changed to a stop codon? a. a silent mutation b. a missense mutation c. a frameshift mutation d. a nonsense mutation