Biology Evidence of Evolution

Fossils

Perserved evidence of an organisms

Fossils as Evidence

Fossils provide a record/proof of extinct organisms

Embryo

An unborn animals or human in the early stages of growth differentiation

Embroys as Evidence

Early-stage embryos of different species share similar feature

Similarities gradually go away as developmentprogress and species specialize into their unique forms

Anatomical Similaries

Species having similar structure suggests their has the same common ancestor

Homologous Structures

Strucutre that perform similar functions in different species that evolved from a common ancestor

Vistigal Structures

Structures that are considered to have lost much or all of there original function through evolution

DNA Similarities

Diffdernt species have similar DNA sequence

DNA Similarities as Evidence

• Having similar DNA suggests thatg species had a common ancestor who’s DNA has just been modified to create new species

• The common ancestor’s DNA is the original strands