how are a bird and a crocodile homologous ?

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how are a bird and a crocodile homologous ?

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https://evolution.berkeley.edu/evolution-101/the-history-of-life-looking-at-the-patterns/homologies-and-analogies

https://evolution.berkeley.edu/evolution-101/the-history-of-life-looking-at-the-patterns/homologies-and-analogies
Homologies and analogies – Understanding Evolution
We use homologous characters — characters in different organisms that are similar because they were inherited from a common ancestor that also had that character. An example of homologous characters is the four limbs of tetrapods. Birds, bats, mice, and crocodiles all have four limbs. Sharks and bony fish do not.
Using The Tree for Classification
Menu. Home; Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise …
Homologies are not just anatomy
The gene that codes for the protein insulin is homologous in humans and cows; both sequences descended from the same ancestral gene sequence. A behavior Birds and crocodiles both provide parental care to their offspring (as shown below); this behavior was inherited from a common ancestor and is homologous.
Homologies: Anatomical evidence
Homologies: Anatomical evidence. Organisms that are closely related to one another share many anatomical similarities. Sometimes the similarities are conspicuous, as between crocodiles and alligators. In other cases – particularly when lineages have experienced natural selection shaping them in different ways – more study is needed for a …

https://news.ucsc.edu/2014/12/crocodile-genomes.html

https://news.ucsc.edu/2014/12/crocodile-genomes.html
Scientists reconstruct genome of common ancestor of crocodiles, birds …
The UC Santa Cruz team used the crocodilian genomes, combined with newly published bird genomes, to reconstruct a partial genome of the common ancestor of crocodiles, birds, and dinosaurs. The study, part of an ambitious international collaboration to analyze the genomes of modern birds and gain insights into their evolution, is one of eight …

https://www.latimes.com / science / sciencenow / la-sci-sn-crocodile-bird-genome-20141212-story.html

https://www.latimes.com / science / sciencenow / la-sci-sn-crocodile-bird-genome-20141212-story.html
When it comes to DNA, crocodiles and birds flock together
13 déc. 2014The bird genome turned out to be slim as vertebrates go — about 1-1.26 billion base pairs, which are the molecules that join together to make the lattice of DNA’s double helix. Birds seem to …

https://www.sciencedaily.com/releases/2014/12/141211142146.htm

https://www.sciencedaily.com/releases/2014/12/141211142146.htm
Scientists reconstruct genome of common ancestor of crocodiles, birds …
Crocodiles are the closest living relatives of birds, sharing a common ancestor that lived around 240 million years ago and also gave rise to the dinosaurs. A new study of crocodilian genomes …

https://www.nature.com/articles/279234a0.pdf

https://www.nature.com/articles/279234a0.pdf
PDF New look at the origin of birds and crocodiles – Nature
preted as a homologous feature originating in a unique common ancestor, then the most primitive birds and crocodiles in which the braincase is preserved should exhibit this feature as well.

https://www.nature.com/articles/237257a0.pdf

https://www.nature.com/articles/237257a0.pdf
PDF New light on the Origin or Birds and crocodiles – Nature
Detailed evidence from the skull of Sphenosuchus, and from embryological and other resemblances between birds and crocodiles, suggests that these two groups are much more closely related than has …

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book:_General_Biology_(Boundless)/18:_Evolution_and_the_Origin_of_Species/18.05:_Evidence_of_Evolution/18.5F:_Homologous_Structures

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book:_General_Biology_(Boundless)/18:_Evolution_and_the_Origin_of_Species/18.05:_Evidence_of_Evolution/18.5F:_Homologous_Structures
18.5F: Homologous Structures – Biology LibreTexts
31 oct. 2023Figure 18.5F. 1 18.5 F. 1: Homology vs. analogy: The wings of pterosaurs (1), bats (2), and birds (3) are analogous as wings, but homologous as forelimbs. This is because they are similar characteristically and even functionally, but evolved from different ancestral roots. Paralogous genes often belong to the same species, but not always.

https://reptilepedia.com/how-are-birds-and-crocodiles-homologous

https://reptilepedia.com/how-are-birds-and-crocodiles-homologous
How Are Birds And Crocodiles Homologous | Reptile Pedia
Birds and crocodiles, seemingly disparate creatures, share a stunning link that can be traced to a shared evolutionary origin. With over 10,000 species of birds and 14 species of crocodiles, these two groups belong to the larger class of reptiles known as Archosaurs.

https://www.britannica.com/science/homology-evolution

https://www.britannica.com/science/homology-evolution
Homology | Morphology, Comparative Anatomy & Genetics
22 mars 2024An example of this is the wings of bats and birds. These structures are homologous in that they are in both cases modifications of the forelimb bone structure of early reptiles. But birds’ wings differ from those of bats in the number of digits and in having feathers for flight while bats have none.

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book:_General_Biology_(Boundless)/20:_Phylogenies_and_the_History_of_Life/20.02:_Determining_Evolutionary_Relationships/20.2A:__Distinguishing_between_Similar_Traits

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book:_General_Biology_(Boundless)/20:_Phylogenies_and_the_History_of_Life/20.02:_Determining_Evolutionary_Relationships/20.2A:__Distinguishing_between_Similar_Traits
20.2A: Distinguishing between Similar Traits – Biology LibreTexts
31 oct. 2023Similar traits can be either homologous or analogous. Homologous structures share a similar embryonic origin; analogous organs have a similar function. For example, the bones in the front flipper of a whale are homologous to the bones in the human arm. These structures are not analogous. The wings of a butterfly and the wings of a …
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