Wednesday, May 13, 2015

Natural Selection

Video 1: The Barnalce Beast
In this video this animals had to do a difficult thing that was falling 120 meters in the air to continue their life as birds, if they survived they followed their mom and dad and move on, so this relates to the natural selection theme because the birds that didn't have the skills or characteristics needed for that fall didn't survive and the ones who did have the abilities and strengths were the ones that survived. There are many more species like this that have to make a big sacrifice to keep the species better.

Video 7: Kangaroo
Since the baby Kangaroos are born it's their responsibility to train and learn how to fight for years so that they have the respect of the clan and have the chance to be the big champion, and win all the female Kangaroos in the clan, so that only that Kangaroo can have offspring and the species keeps on evolving on the best way possible. This is also an example of Natural selection because the best offspring with the best abilities can be the winner and the others would be the losers and won't get any female to reproduce.

Monday, May 11, 2015

Poster Evolution Project

                                        Past:
Resultado de imagen para Acinonyx KurteniAlmost 5.5 million years ago the great Acinonyx Kurteni lived, a big carnivore animal with strong bones and muscles. Very similar to the Cheetah, bigger muscles big head, jaw and paws to grab their prey stronger and kill them almost inmediately.



Present:
The Average Cheetah has changed from the Acinonyx Kurteni by decreasing the muscle and bone volume, the Cheetah now has the ability to run incredible speeds in very short time, now the Cheetah is very agile and has developed more strength on its feet so he can run and catch their prey fast and quickly. It's sight and hearing has increased too because the Cheetah needs to be silent while he gets close to the prey and also needs to see from long distances to see if there are many animals that may defend from his attack.
Resultado de imagen para cheetah
                             Future:
Resultado de imagen para black cheetahThe Cheetah will be all black with no spots, he will develop bigger and stronger claws for climbing steap mountains, he will have better eye sight to look far away for other prey and will change his diet to brown bears that live there and will hunt mostly deers. He will recover some of the volume and strength in his legs for giving strong hits to the prey and getting quickly to it.


Reference List:
1: http://animals.nationalgeographic.com/animals/mammals/cheetah/
2: http://www.pnas.org/content/106/2/512.full

Monday, April 20, 2015

Evolution terms

Overproduction: When people produce things in excess without people needing a big part of it. Exceeding production. For example when humans produce too much of something when they don't really need all that quantity.

Variation: The process or the act of changing and doing things different, something different from another species or organism.

Adaptation: A process of an organism being changed in different situations to adapt and survive in that environment. Like the cormorat bird that dives into the water in order to get food, he adapted to survive.

Selection: When a species is built perfectly to live and adapt in a certain environment, they have the best body and perks to live there.

Speciation: The starting point when a species evolves and splits to stop reproducing with the other species. Each species takes their own path. For example, when humans evolved from apes and could no longer reproduce with apes.

Isolation: When an animal or thing is Isolated from the rest. Like Galapagos, this Islands where Isolated from the whole world until pirates discovered it, and the species in Galapagos where isolated from many other predators, so they could evolve.

Monday, April 13, 2015

Analysis natural selection

I found out in this experiment that animals don't necessarily survive because they are the strongest species or because they eat any certain food, but they can also die because they may be really unlucky. Like the dinosaurs, they were in the top of the food chain and they got extinct because of a meteorite. In this experiment there were many species of animals that died and very few survived because of their traits, so this species that survived were the ones that made more offspring with the same or some may have evolved with better traits  that will help them survive and keep evolving. Natural Selection acts that way: The best or the luckiest species evolves and becomes better and the other species gets instinct, it no longer exists.

Friday, March 13, 2015

Stem Cells Essay

Stem Cells are unspecialized cells, there are 2 types of  Stem cells, Embryonic and Adult, Embryonic cells are pluripotent, they have the ability to turn in any cell in the body. First the sperm meets the egg, that forms a Zygote and then it forms an embryo and those are the Embryonic stem cells. Adult stem cells are already formed in your body, they can only turn in a certain type of cell not ion every single one, they help all your body whem it is damaged.

People think that the Scientists research about the Stem Cells is killing babies because it consists on gathering  Embryonic Stem Cells to continue the research on what they are capable of doing, but to get this cells Scientistst must destroy the embryo to get them. There is another way of using Stem cells for their research that would be combining Induced Pluripotent stem cells with Adult Stem Cells, which makes Adult stem cells behave as Embryonic stem cells, this research would help on getting the Ethical dilemma out of the way.


In my opinion, Scientists should keep on resarching this, because this could change people's lifes, this discovery can cure countless diseases and recreate people's fingers and even arms, for example on 4 weeks if somebody chops a finger a doctor can inject Stem cells so that this cells act as the cells needed in that part of the body and they can regrow back, and not only this, with more research they could also cure Cancer and other complicated diseases that doctors would need help on. 

Friday, March 6, 2015

Questions Genetics 1

1: Nature affects your genes throughout your life when you start getting older, your genes change and you change in puberty until you are an adult, but In my opinion you mostly change by Nurture because everything you chose to do throughout life affects you and your body, for example if you only eat junk food it will make your body weaker and you will be more open to a diseases, but if you eat very healthy you will have more chances of surviving a disease.

2: DNA needs to be copied correctly for your body to have the same process of things and for avoiding trouble inside the body. If DNA doesn't copy correctly 3 main things could happen, It might be good for evolution and make great changes throughout history, it may not be a problem at all or It could be a bad thing for every single cell in your body if it keeps on copying badly it could continue harming future generations of the family, in any case people should be aware of what they do in life for avoiding harm.

3: Sexual reproduction.
Advantage: Every offspring will be born different and some would be stronger or weaker than others and there could be more opportunities for change and evolution. Also the offspring would have more protection from the mother.
Dis advantage: The mother of the offspring may suffer from the pregnancy because it may be too hard for her, it takes more time for the offspring to be born and in the life of the offspring takes time for it to form perfectly healthy and correctly.
Asexual reproduction:
Advantage: The offspring reproduces really quickly and more and more offsprings would be born and there would be more of that species.
Dis advantage: The offsprings are exactly the same and if there is a harmful disease it would wipe out every single species that the disease can affect, also there is almost no chances of evolution for that species.

Wednesday, February 25, 2015

Chromosome mutations

1: How can mutations affect us as humans?
Some people may be affected by mutations and the results may be good, bad or it won't change anything but humans may be affected because if someone gets a negative mutation and it affects his system and he passes it to his children and family, that negative mutation could keep on passing through generations, another example would be if any person gets a positive mutation and it creates some sort of immunity or protection against some diseases, this mutation would keep on passing through those family's genes and it would make the society healthier and better equiped to survive. There are many other examples of genetic mutations be good or bad. There are many mutations that affect humans in physical and internal ways but I think that this kinds of mutations build some genes stronger so we could be better prepared and less harmed in the future.

Wednesday, February 18, 2015

Oreo Lab

1: Why is it important that each cell copies it's DNA exactly?
It is very important for the DNA of the cells to be exactly the same when it is duplicated because the DNA has all your genetic information and this information has to be kept the same for normal development of each part of the human body, If any cell duplicates and has the wrong DNA information, there would be a problem, the cell would continue dividing and the wrong genetic information would be past on. Also if the cells would want to make a certain type of cell for recovering a skin part of the body the cells would make more skin cells not hair cells or other type of cells that that part of the body needs, that would damage the process.

Sunday, February 15, 2015

Monster's Lab questions


1) Why might one trait be more popular than others in a particular population?

There are many traits that are very common on people, for example the eye colors Brown against Blue, in this case Brown would be the dominant color and Blue would be the recessive color, Brown is very likely to be the next result of the offspring.

2) Is it possible for an offspring to have a phenotype that neither the father nor the mother has? Explain your answer.

Yes, although it is really rare for this to happen there can be a slight change of traits and the environment could also condition the phenotypes so that there wouldn't be a full compatibility, and if this happens there could be an offspring that has a different phenotype as their parents. Also the offspring´s grandparents could have had the traits that he has without the offspring's parents having it.