crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis. At that stage each chromosome has replicated into two strands called sister chromatids.
Answer: a peptide containing alternating arginines and alanines.
Explanation:
As the mRNA has a repeating unit of CGCG.
Now if we extend the units with more CG (CGCGCGCGCGCG) the pairing will be as CGC-GCG-CGC-GCG. and if we see the amino acids coded by these codons are arginine for CGC and alanine for GCG.
As this synthetic mRNA doesn't require any initiation codon (AUG) thus the polypeptide will not have methionine, which is the first amino acid in every polypeptide coded by the initiation codon.
Thus, the synthetic mRNA will code for peptide having alternating arginines and alanines amino acids.
Answer:the correct answer is eating or breathing
Explanation: because most animals eat to get the substances they need and breathing is also a big one if they don't breath they will die like the every being on this planet needs oxygen to live if we do not have those we will drop over dead.
Without enzymes, the temperature inside cells would increase rapidly.
Without enzymes, biochemical reactions would cease completely.
Without enzymes, chemical reactions would not occur quickly enough to sustain life.
Without enzymes, ribosomes would break down proteins, rather than build them.
