Imagine having an dinosaur as a pet, just being able to train and love it. There are so many extinct animals – maybe even some we don’t know about. Some people want to discover these animals by cloning them, but they need enough DNA to clone them and would need to consider the reason why these animals went extinct in the first place.One of the first extinct animals scientists have considered bringing back is the woolly mammoth, This is largely because they have so much DNA from these animals, many of them froze so fast that we can still see what it ate. The bodies were so well preserved that some people even eat the frozen woolly mammoth’s flesh! the only way we can bring back an animal is if we can find a good sustainable fragment of DNA. The reason scientists want to bring back these extinct animals is to advance the science of preventing extinctions. This would mean that for animals in danger of extinction, scientists would have a better idea of what to do to preserve that species.

You may ask why we bring back this extinct species? “…The bioengineering approaches may pave new ways to apply genetic rescue to combat herpes for Asian Elephants or to fight the ivory black market. For example, engineering biomarkers into tusks to track poaching, or more radically to alter tusks in a way that make them valueless to the ivory trade, which would allow male elephants to keep their large tusks – important indicators of good genes for mating..” Having these animals back might help in the battle with climate change “…The tundra ecosystem that arose in the absence of these large grazing species is now affected by and contributing to human-driven climate change…” and bringing this animal back can show new thing in an ecosystem.They provide in an ecosystem “…

Scientists have only found out how to clone mammals because they don’t know how they can inject the DNA cells into an egg of a bird or a reptile, because it might just crack the egg. While it may not be impossible to clone a bird or a reptile, the egg issue means that it’s very complicated. One bird species is the heath hen = an extinct species of bird that scientist are working on to bring back. The primary reason that Heath Hen de-extinction is preferable to other forms of ecological replacement comes down to one key trait: reproductive viability. Its closest relative, the Greater Prairie Chicken, could never successfully colonize New England habitats, particularly on the small Massachusetts islands.

Some downsides to reintroducing animals that have gone extinct are that we don’t know what will happen when the animal comes back. Looking at history, when we introduce a species to an invironment, they may become an invasive species. These are animals that help lower the amount of species in an environment. An example is the introduction of the mongoose into several islands, including Hawaii. There were too many rats, so settlers released mongoose in the area in hope that they would get rid of the rats. They did not consider that mongooses hunt during day and rats are active during the night. It did not solve the rat problem, but caused several new problems. This means if they release woolly mammoths into the wild, we have to ask if they are more likely to eat all the grass and other things, leaving the other animals that live in the current ecosystem to starve. If we introduce an invasive species into the, environment they might breed too much then eat more than the environment can sustain.

Comments

comments