The question is unclear. It is not made clear between what these similarities and differences should exist.
The term is "phylogeny," which is the study of the evolutionary relationships among organisms based on similarities and differences in their genetic and physical characteristics.
The genetic differences between monkeys' DNA and human DNA influence their evolutionary relationship and physiological similarities. These differences can affect traits such as physical appearance, behavior, and susceptibility to diseases. Despite these variations, monkeys and humans share a common ancestor, leading to some similarities in physiology and behavior.
The study of embryological similarities and differences among species is called embryology. It involves comparing the development of embryos to understand evolutionary relationships and patterns in species.
The study of similarities and differences in the structures of organisms is called comparative anatomy. This field of study focuses on examining the anatomical features of different species to understand their evolutionary relationships and adaptations to their environments. Scientists use comparative anatomy to uncover common ancestry and identify shared evolutionary traits among organisms.
Organisms exhibit similarities due to shared evolutionary history, where common ancestry results in shared characteristics. Differences arise from adaptations to various environments and selective pressures, leading to diverse traits within and between species.