Reports of reactions to food additives have included the following: 1  Skin urticaria/angioedema. atopic dermatitis. 2  Gastrointestinal abdominal pain. nausea/vomiting. 3  Respiratory asthma symptoms. cough.  Musculoskeletal muscle aches. joint 1  aches. Neurologic behavior and mood changes. attention deficit and hyperactivity disorder.  Cardiac palpitations.
DNA replicates by the semiconservative model of replication. This model states that during replication of double stranded DNA, the two strands separate and each separate strand is then used as a template to make a new strand.
A duplicated chromosome is formed as a result of DNA replication. Since DNA replication is semi-conservative, the two components (or strands) that make up the duplicated chromosome are called: The parent strand (or the leading strand) The newly synthesized strand The replication process involves synthesizing a new strand based on the sequence of the parent strand.