Ella Aerts Period 5 Your Inner Fish Discussion Answers Chapter 1 - Finding Your Inner Fish Neil and his colleagues focused on rocks from 375 million years ago because fossils from 360 million years ago were amphibians with necks and four legs. However rocks that are 380 million years old looked more like fish we know today, with fins and scale. So, it made sense that they would find the transitioning fossils in rocks that was 375 million years old. Neil chose to look in sedimentary rocks, such as limestone, sandstones, siltstones and shales, because they form fossils gently since they generally are formed by rivers, lakes and seas. At first, they were looking for fossils in the Devonian rocks in Pennsylvania, but they did not have much luck since the rocks had too much exposure. So they found that the High Arctic of Canada was ideal because the rocks were 375 million years old, they were sedimentary and had little exposure. Webbed fins, a flat head, a neck and scales on its …show more content…
The hedgehog gene helps make a region of the body different from another region and is found in limbs. This gene is active in ZPA. Cliff Tabin, Andy Macmahon and Phil Ingham attached a molecule of the hedgehog gene to see where it was active in the chicken. They found that iw is active in the ZPA. If the gene didn’t turn on when it’s supposed to, then we’d have extra finger of our pinkie and thumb would look alike. Randy Dahn ran similar experiments on sharks and Skate He saw that the gene turns on at the same time as in chickens. Also it is turned on in the back of the fin aka the pinkey. When they treated it with a vitamin A, it turned the gene on in the opposite side of the fin as well. Later he took a hedgehog gene from a mouse and placed it between identical skeletal rods of a skate. The rods responded to the gene. Since the mouse is a mammal and its gene worked on the skate, it proves that all genes are build
In my hypothesis, I state that the stickleback fish would not have a pelvic spine caused by an insertion mutation in the Pitx1 enhancer region. According to the gel, the stickleback fish in Big Lake do not have the pelvic spine due to a deletion mutation found in the Pitx1 enhancer region. This can be further proved by the phenotype of the fish found in Big lake. The stickleback fish found in Big Lake (seen in figure 2) is smooth across the bottom, with no pelvic spine present. This proof supports the results of the gel
Since the location was near to the Maribyrnong River, the procedure must be further stimulated by the existence of the river in the ecosystem, and this is happening from the further upstream. As for the downstream, it carried by the sediment that deposited at the riverbanks of the Maribyrnong River. Weathering and erosion of the primary rock in the early stage were leading to the deposition of sediment, and the younger sediment progressively replaced the older sediment which along the riverbank (Figure 2.3). Further away from the Maribyrnong river a little bit where the river flow was gradually rapid, some Marine deposits from the Ordovician Period was found such as mudstone, interbedded shale and greywacke, which may
In the United States there are over 400 places that the National Parks Service (NPS) protects. In Katy Steinmetz’s article “A Monumental Fight” she give some background on how the dispute over the national funding of parks started. The dispute over national parks and their funding have been a debate for over a hundred years. It started in 1906 when Teddy Roosevelt used the Antiquities Act to create eighteen national monuments. National monuments legally must have objects of scientific or historical value to become a monument.
Blackfish is a film on the various incidents involving orcas in SeaWorld, focusing on Tilikum especially, who killed three people. Blackfish argues that captivity causes psychological harm to orca. It claims that because orcas are used to swimming up to 100 miles per day, keeping them in small enclosures has a detrimental effect on their mental well-being. A neurologist interviewed in the film says that all orcas in captivity are emotionally scarred, traumatized, and are thus “ticking time bombs”. Evidence in the documentary is used to suggest that orcas exhibit signs of stress, hyperaggression, depression, and frustration, which, especially with Tilikum, seemingly manifested itself as violent outbursts against the trainers, and other orcas
Blackfish is a documentary written about the cruel way the killer whales are treated in SeaWorld. The documentary explains the circumstances in which the killer whales are caught, and the small spaces these huge animals are allowed to live in, which leads to short life span and aggravated behaviors of the otherwise gentle Orcas. The maltreatment is believed to have led the death of several trainers in Canada, America, and Spain, as the killer whales grew increasingly agitated with their conditions. A good documentary film must have a captivating storyline, real interviews, facts and statistics to back up claims, and actual footage. There are several documentaries being released on a weekly basis, in which "claims," are made but later repealed.
In 2013, a documentary called Blackfish was released to the public. This film was produced, written, and directed by a lady named Gabriela Cowperthwaite, as a way to show the world how poorly whales are treated and why they do not belong in captivity. Blackfish also shows how little people really know about the beautiful and highly intelligent orca whale itself. Her film was seen by many, and touched the hearts of a lot people, taking the debate of the topic to a higher level. The movie hits on a lot of main issues about captivity, told by reliable people, along with proven statistics to go along with them.
How do relationships with others show our true personality? The way we communicate with others, views how people see us. In the story “ What of this Goldfish do you wish?” by Etgar Keret’s. Shirley Jackson’s “ The Lottery” and Diane Glancy’s “ Without Title”.
Blackfish (2013) is an American documentary film directed by Gabriela Cowperthwaite and produced by Manuel V. Oteyza. The documentary primarily concerns the controversy of captured Killer Whales at the theme park Sea World, primarily that of Tilikum, an Orca responsible for the deaths of 2010 SeaWorld trainer Dawn Brancheau and two other individuals. The documentary begins with this incident but goes as far back to the 1970 's show the audience how young Orcas are captured in the wild and taken from their families and natural environments. Since its release at the 2013 Sundance Film Festival Blackfish has achieved both critical acclaim and caused controversy regarding SeaWorld 's treatment of its animals as well as retaliation from SeaWorld as to the legitimacy of the film 's claims.
Science DBQ The rock cycle is important to scientists in many ways. It shows the top three rocks and shows how they form. Geography is the study of rocks and minerals (Doc 1.) .Physical geology is the study of how rocks form into other rocks and the composition of rocks and landforms (OI), so physical geology scientists probably use the rock cycle everyday in their work.
Shubin and his crew tore into the area and, just as Shubin and many others had predicted the creature actually had multiple elements. The elements in particular were both fish and amphibian. They learned from rock progression that this creature’s life was just about 375,000 years ago. Since Shubin and his colleagues successfully discovered the creature they were given rights to name it. Shubin and his colleagues named it “Tiktaalik” which meant large freshwater
Introduction Transgenic mice are that have had a foreign gene deliberately inserted into their genome. Such animals are most commonly created by the micro-injection of DNA into the pronuclei of a fertilized egg which is subsequently implanted into the oviduct of a pseudo pregnant surrogate mother. This results in the recipient animal giving birth to genetically modified offspring. The progeny is then bred with other transgenic offspring to establish a transgenic line. Transgenic animals can also be created by inserting DNA into embryonic stem cells which are then micro-injected into an embryo which has developed for five or six days after fertilization, or infecting an embryo with viruses that carry a DNA of interest.
Once there was a boy nicknamed Bud, and his father Jeff in Lime Springs at the Lidtke Mill catfishing. They thought they saw a man that had died while back in 1980s from the mill, fishing up by the mill, two seconds he later was gone. The two boys kept fishing for a few minutes then they heard a swish, then they seen him right across the river and Jeff thought he had caught a big fish, but it was a skeleton they called the police and the man was gone and they looked for evidence but they found that the man had worked and died in the mill. The next night Bud and Jeff went catfishing two nights later and they seen the man in the same clothes as last time but this time they got a closer look at him and he was floatin of the ground about
There is an overwhelming amount of support for theories on the origin of life. Although each theory differs to one another, all proposed theories imply that life has evolved from single-celled microorganisms to the complex multicellular life forms that have existed over millions of years. The first hypothesis I am evaluating is the Panspermia hypothesis. Panspermia, from Ancient Greek is defined as (pan) meaning ‘all’, and (sperma) meaning ‘seeds’.
How did this extraordinary result occur? There has been much research on the molecular and genetic mechanisms underlying ZPA’s role in limb development to answer this, leading to the ZPA becoming one of the best understood examples of an ‘organizer’ facilitating cell communications in vertebrate embryonic development (Tickle, 2002). It is the development of scientific understanding regarding these molecular and genetic mechanisms that will be the focus of this