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Los bilaterales (Bilateria) son los animales con simetría bilateral, por la cual el organismo es simétrico respecto a un plano (plano sagital) que divide el cuerpo en dos mitades especularmente idénticas. Este tipo de simetría es el más extendido en el reino animal.
Bilateria (/ ˌ b aɪ l ə ˈ t ɪər i. ə / BY-lə-TEER-ee-ə) is a large clade or infrakingdom of animals called bilaterians (/ ˌ b aɪ l ə ˈ t ɪər i. ən / BY-lə-TEER-ee-ən), characterized by bilateral symmetry (i.e. having a left and a right side that are mirror images of each other) during embryonic development.
16 de jul. de 2020 · The genetic mechanisms underlying these events are unknown, leaving a fundamental question in evolutionary biology unanswered. Using large-scale comparative genomics and advanced orthology evaluation techniques, we identified 157 bilaterian-specific genes.
- Peter Heger, Wen Zheng, Anna Rottmann, Kristen A Panfilio, Kristen A Panfilio, Thomas Wiehe
- 2020
16 de jul. de 2020 · Abstract. The Cambrian explosion was a unique animal radiation ~540 million years ago that produced the full range of body plans across bilaterians. The genetic mechanisms underlying these events are unknown, leaving a fundamental question in evolutionary biology unanswered.
- Peter Heger, Wen Zheng, Anna Rottmann, Kristen A Panfilio, Kristen A Panfilio, Thomas Wiehe
- 10.7554/eLife.45530
- 2020
- eLife. 2020; 9: e45530.
The Bilateria are animals which are bilaterally symmetrical. They have front and a back end, an upside and downside, and a left and right side. Most animals are bilateral. Main subgroups. Deuterostomia. Echinodermata (20,000 species, 7000 living) Chordata. mostly Vertebrata (63,000 species) Hemichordata; Protostomia
Bilateria ( / ˌbaɪləˈtɪəriə /) is a large clade or infrakingdom of animals called bilaterians, characterized by bilateral symmetry (i.e. having a left and a right side that are mirror images of each other) during embryonic development. This means their body plans are laid around a longitudinal axis ( rostral – caudal axis) with a front ...
Los radiados ( Radiata ), celentéreos o celenterados ( Coelenterata) son un taxón parafilético empleado históricamente para agrupar a los más primitivos animales eumetazoos, habitualmente en oposición a los pertenecientes a Bilateria, es decir, enfatizando la presencia de una simetría radiada en vez de bilateral en el adulto.
