1 If you're under 16, it can helpful to bring along a parent or guardian for the initial interview with the people seeking babysitting. 2  This reassures the other parents that your own parents are invested in your success and that you mean business, and it also protects you.
Evolutionary biology. Fitness (often denoted w {\displaystyle w} or Ï in population genetics models) is the quantitative representation of natural and sexual selection within evolutionary biology. It can be defined either with respect to a genotype or to a phenotype in a given environment.
Best Answer: Um... I think a sterile animal, by definition, has a fitness of 0, as fitness (in this sense) means capacity to reproduce.