descended from a common ancestor
This question can not be answered without more information.
# Survival of the species.
they are born from the same species and they look alik
Similar bone structures in species
Physiological similarities suggest the species evolved from the same ancestor.
The kinds of evidence that indicates how closely species are related are evidence of DNA and protein structure.
This question can not be answered without more information.
"Scientist have combined the evidence of DNA, protein structure, fossils, early development, and body structure to determind the evoltionary relationships among species."
This is an occurrence of co-evolution of the two species.
The evidence do scientist use to determine evolutionary relationships by scientist have combined the evidence from DNA, protein structure, fossils, early development, and body structure to determine the evolutionary relationship amoung species.
Scientists want to determine the evolutionary relationships among different species.
reproductive
The basis for all science, be it evolution or the study of how squeaky noises annoy people, is evidence. Darwin's primary evidence for evolution by natural selection was morphological homology; physical similarities between species. Modern evidence for evolution by natural selection is vast and includes a rich fossil record, well understood geologic evidence, radioisotopic evidence, as well as a host of genetic evidence from protein homologies to complex molecular systematics. All evidence for evolution converges on the singular observation that all organisms can be organized in a nested hierarchy much like a family tree; a Tree of Life.
Comparing human hemoglobin with that of other species can reveal similarities and differences in the protein's structure and function. Understanding these variations can provide insights into the evolutionary relationships between species and how hemoglobin has evolved over time to adapt to different environmental pressures or physiological needs. Additionally, comparing hemoglobin across species can help identify conserved regions that are important for its function and provide clues about the molecular mechanisms underlying changes in hemoglobin function during evolution.
None.
Edge effect
All organisms are adapted to their environment to a greater or lesser extent. If the abiotic and biotic factors within a habitat are capable of supporting a particular species in one geographic area, then one might assume that the same species would be found in a similar habitat in a similar geographic area, e.g. in Africa and South America. This is not the case. Plant and animal species are discontinuously distributed throughout the world