The m-rna fragment is constructed from: - a) one series of dna molecule b) dna series c) amino acids d) t- rna

mRNA is a single stranded molecule transcribed off of a dna molecule(the template strand).

So probably mRNA is constructed from one series of dna molecule.(A)

g

Explanation:

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.