After one week of life, the weight of five chicks of the same sex hatched simultaneously from the eggs of the same hen and fed on the same diet were 45g, 40...

Answer Details

This is an example of variation. Variation refers to the differences that exist among individuals of the same species. In this case, the chicks are of the same sex, hatched from the eggs of the same hen, and fed on the same diet, yet they have different weights. This is because of genetic and environmental factors that influence their growth and development. These differences in weight can lead to differences in survival and reproductive success, which are important factors in the process of natural selection. However, in this case, the observation is simply an example of variation.