Evidence of Evolution- Struthioniformes by Charlotte Arnao

Evidence of Evolution- Struthioniformes by Charlotte Arnao https://padlet.com/ca914/9tzism4n0emh en-us 2018-06-03 02:16:37 UTC 2024-08-05 10:16:37 UTC hello@padlet.com Four Major Characteristics ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265181773 1. No keel on sternum or breast bone
2. Palaeognathous palate (Rigid palate and jaw)
3. A break in the postnasal strut
4. The structure of the rhamphotheca

]]> 2018-06-03 02:26:14 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265181773 Exemplary Species ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265181990 1. Dwarf Cassowary
2. Okarito Kiwi
3. Masai Ostrich
All three species are flightless birds that are common in forests and are territorial. All are herbivores. ]]> 2018-06-03 02:33:40 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265181990 Other Characteristics ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265211442 Behavioral:
1. Diurnal except for the nocturnal kiwi
2. Lay eggs in nests
Habitat:
1. Can survive in nearly any conditions
2. Known to live in extremely low and extremely high temperatures]]> 2018-06-03 14:00:11 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265211442 Taxonomy of Dwarf Cassowary ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265212236 Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Casuariiformes
Family: Casuariidae
Genus: Casuarius
Species: casuarius bennetti

]]> 2018-06-03 14:10:41 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265212236 Taxonomy of Okarito Kiwi ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265212764 Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Apterygiformes
Family: Apterygidae
Genus: Aperyx
Species: rowi ]]> 2018-06-03 14:17:05 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265212764 Taxonomy of Masai Ostrich ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265213087 Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Struthioniformes
Family: Struthionidae
Genus: Struthio
Species: camelus massaicus ]]> 2018-06-03 14:21:40 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265213087 Taxonomy as Evidence of Common Ancestry ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265213314 Taxonomy alone displays information about the relatedness of these three different species; all three species belong to the same kingdom, phylum, and class. ]]> 2018-06-03 14:24:46 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265213314 Evidence of Evolution #1: Fossil Record ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265214112 1. S. asiaticus

Late Pilocene

2. S. linxiaesis

Miocene

3. S. karatheodoris

Middle Turolian

4. S. Camelus

Early middle Turolian

5. Palaeotis weigelti

Middle Eocene

6. Remiornis heberti

Late Palaeocene

]]> 2018-06-03 14:34:33 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265214112 Evidence of Evolution #2: Anatomy ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265218139 Rheas and Ostriches: Large wings, kidney-bean shaped spleen, long ceca
Emus and Cassowaries: Small wings, short ceca, similar proventriculi ]]> 2018-06-03 15:26:34 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265218139 Evidence of Evolution #3: DNA/RNA ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265221074 DNA extracted from fossilized ostrich eggshells found in India show a high degree of similarity with the DNA of struthio Camelus. It is 92% similar to this species, and other species to which the extracted DNA is similar are shown in the phylogenetic tree below. ]]> 2018-06-03 16:00:20 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265221074 Evidence of Evolution #4: Chromosomal Analysis ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265221703 Organisms within the order struthioniformes contain Z and W chromosomes that are similar in size and undifferentiated. They also have avian karyotypes, meaning they have a high diploid number of chromosomes (74-86). ]]> 2018-06-03 16:07:40 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265221703 Speciation ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265231699 The formation of species within the order struthioniformes is an example of punctuated equilibrium. This is clear because the taxonomic group experienced little to no change in its number of species for a long period of time until the continental drifting of Gondwanaland. This continental drift resulted in a sudden, rapid increase in the number of species within the order struthioniformes. ]]> 2018-06-03 18:16:03 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265231699 Type of Evolution ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265232341 Struthioniformes evolve through divergent evolution. This is because differences between groups within the order arise and cause the formation of new species. This divergent evolution is a result of the continental drifting of Gondwanaland, which prompted the diffusion of different groups of the order struthioniformes to different and isolated regions and further blocked gene flow between those groups. ]]> 2018-06-03 18:25:30 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265232341 Geographic Isolation ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265234027 Geographic isolation was an evolutionary mechanism for the order struthioniformes. It occurred when Gondwanaland experienced a continental drift, causing rheas and emus to migrate to South America and Australia, where they were geographically isolated from ostriches and elephant birds, which remained on Indo-Madagascar. ]]> 2018-06-03 18:44:18 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265234027 Adaptive Radiation ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265237535 Adaptive radiation was an evolutionary mechanism for struthioniformes. This is because different groups within the order struthioniformes adapted into forms that filled ecological niches in their environments. For example, the ostrich evolved into an organism with long legs that help it outrun predators, and short, heavy toes and heavy leg bones that give the ostrich stability. ]]> 2018-06-03 19:24:39 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265237535 Descent with Modification ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265267325 As shown in the phylogenetic tree in "Evidence of Evolution #3: DNA/RNA," the kiwi, rhea, moa, emu, and ostrich share common DNA. However, the fact that they have different characteristics shows that decent with modification occurred within the taxonomic group. ]]> 2018-06-04 01:30:42 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265267325 Type of Natural Selection ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265268041 Struthioniformes underwent directional selection because natural selection favored organisms within the taxonomic group that were adapted for speed. For example, the average length of the legs of the ostrich increased over time because natural selection favored ostriches with longer legs as an advantage towards agility. ]]> 2018-06-04 01:37:13 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265268041 Four Pieces of Evidence to support Evolution ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265272421 The four pieces of evidence support the theory of evolution because they show similarities between the anatomy and genetic makeup of organisms of different groups within the order struthioniformes. This proves that the different organisms within the order struthioniformes, such as the ostrich, kiwi, and cassowary, share a common ancestor. ]]> 2018-06-04 02:16:46 UTC https://padlet.com/ca914/9tzism4n0emh/wish/265272421 Sources ca914 https://padlet.com/ca914/9tzism4n0emh/wish/265281067 Info:

http://www.nhptv.org/wild/struthioniformes.asp

https://www.kiwisforkiwi.org/about-kiwi/kiwi-species/

http://animals.sandiegozoo.org/animals/cassowary

https://australianmuseum.net.au/emu

https://www.britannica.com/animal/rhea-bird-group

https://birdeden.com/types-of-ostriches

https://www.accessscience.com/content/struthioniformes/662900

http://animals.jrank.org/pages/350/Tinamous-Ratites-Struthioniformes-BEHAVIOR-REPRODUCTION.html

https://struthionifunfacts.weebly.com/blog/habitat

https://www.arkive.org/dwarf-cassowary/casuarius-bennetti/

http://animals.jrank.org/pages/363/Cassowaries-Casuaridae-BEHAVIOR-REPRODUCTION.html

http://nzbirdsonline.org.nz/species/okarito-brown-kiwi