It shows the organism has same structures as its relatives.
The theory of evolution is supported by the fossil record, which reveals a chronological progression of species and transitional forms that illustrate gradual changes over time. Comparative anatomy shows similarities in the structures of different species, indicating common ancestry; for example, the forelimbs of mammals, birds, and reptiles have similar bone structures despite differing functions. Additionally, comparative embryology demonstrates that embryos of diverse species exhibit striking similarities in early development, further suggesting a shared evolutionary origin. Together, these lines of evidence reinforce the concept that species evolve and adapt over time through common descent.
The line of descent of a purebred animal is called it's pedigree.
It's not groups that are the key bit of evidence for common descent, but nested hierarchies.In all lifeforms known to humankind, be it extant or extinct, the totality of similarities and differences forms a pattern of nested hierarchies - sets within sets within sets, each set having all the defining characteristics of the superset in addition to unique defining characteristics for itself and its subsets.There is only one testable explanation for such a pattern: common descent.
Speciation without branching of the evolutionary line of descent.
Meursault lives in Algeria, but is of French descent
Homologous Structures
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Structures which are apparently different and performing different functions but their basic structure is similar are called homologous structures and indicate common ancestry eg. fore limbs of bat , whale , horse dog and man apparently different but are made up of humerus , radius , ulna , carpel , metacarpals and phalanges .
A homologous structure is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor.
The three types of evidence that suggest organisms are related through common descent are anatomical evidence (similarities in body structures), molecular evidence (similarities in DNA sequences), and fossil evidence (transitional forms showing evolutionary changes over time).
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yes they do
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Biochemistry is concerned with chemical substances and processes that occur within plants, animals and microorganisms. All life has prominent similarities at a molecular level. Organisms have basically the same:Genetic code in their DNAEnzymes used for basic metabolic processes, such as cellular respirationStructural Chemicals in their basic cell components, such as the phospholipids in cell membranes.
The theory of evolution is supported by the fossil record, which reveals a chronological progression of species and transitional forms that illustrate gradual changes over time. Comparative anatomy shows similarities in the structures of different species, indicating common ancestry; for example, the forelimbs of mammals, birds, and reptiles have similar bone structures despite differing functions. Additionally, comparative embryology demonstrates that embryos of diverse species exhibit striking similarities in early development, further suggesting a shared evolutionary origin. Together, these lines of evidence reinforce the concept that species evolve and adapt over time through common descent.
When comparing earlier and later developments, homologous structures become more refined through time. When comparing common ancestors, we can compare the derivations of a homologous structure between two successors and also between the ancestor and each successor. We thus see several relationships between this and that, from 'right now', 'a little before now' and 'way back then'. For example, we see two species whose legs are very similarly structured, and then we find an ancestor that also possessed such a leg, except it was simpler or shorter or in a different ratio between sections. We can draw conclusions that the later species developed both from this earlier one, and that this earlier one died out, after its successors (which eventually became the newer species) could survive more often because they had better structured legs.
Embryology provides evidence for evolution because it shows similarities in early developmental stages among different species. For example, vertebrate embryos often have similar structures early in development, reflecting their shared ancestry. These similarities suggest a common evolutionary origin and support the idea of descent with modification.