91影视

Consider a pencil-shaped protein with two epitopes, Y (the 鈥渆raser鈥� end) and Z (the 鈥減oint鈥� end). They are recognized by antibodies A1 and A2, respectively. Draw and label a picture showing the antibodies linking proteins into a complex that could trigger endocytosis by a macrophage.

Contrast clonal selection with Lamarck鈥檚 idea for the inheritance of acquired characteristics.