During the nitrogen cycle, inorganic nitrogen from the atmosphere is converted into organic compounds. What is the process called?

the answer to you question is   jet streams

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.