The most important reason for food handlers to understand and apply food safety knowledge is to prevent the spread of illnesses through food. Food workers play a critical role in ensuring food safety, those who do not practice proper personal hygiene, including hand washing at appropriate times and using appropriate methods can contaminate food. It is therefore; very important for food workers to understand and apply food safety measures so as to prevent spread of diseases through food.
A polygenic trait is a type of trait whose phenotype observed is affected by more than one genes i.e expression of the trait is controlled by not only a single gene but many. These traits include height or skin color and they display that display a continuous distribution; the hair color is controlled by 7 genes as described which is more than more.
No because of the whole population was identical they would not have genders and would not be able to reproduce. Reproduction is essential to evolution
