Activation of cellular and humoral immunity occurs during<span> clonal selection, the </span>second phase of the immune response. Migration of the lymphoid cells from the bone marrow to central lymphoid organsoccurs during<span> the first </span>phase of the immune response<span> (generation of clonal diversity)</span>
Organic molecules known as macromolecules.
Hope this helps
It means that only those who are able to adapt with all conditions they are placed in will be able to live.
<span>Other than uuu, another mrna codon that codes for phenylalanine (phe) is the </span><span>Leu/L with the mRNa codons of </span>UUA, UUG, CUU, CUC, CUA, CUG. Another is <span>Lys/K with mRNa codons of </span>AAA, AAG, and <span>Met/M with mRNa codons of </span><span>AUG.</span>
on e might have it but the other might not and the disease got inheried