Due to arising conflict in self-image and others.
In Psychology, self-actualization is process where an individual reaches and achieves their full potential and capabilities as a person. In Maslow's model, this is considered to be the highest step in the hierarchy.
Now, most individuals do not achieve this because of conflict that occurs within the self and with other people.
The white blood cell identifies the toxin produced by the pathogen and creates antibodies to fight the pathogen
not sure if this is what you need.
The shuffling of chromosomes that occurs during both fertilization and meiosis can lead to genetic variation. This is because of the independent assortment and crossing over. Hope this answers the question. Have a nice day. Feel free to ask more questions.