Biology Is Life !

Darwin based his theory of evolution on finches in the Galapagos islands. There were 14 different species there and he thought that they all developed from the same species. He used his theory of natral selection.

How does natural selection work?

Darwin's theory of evolution
 

Natural Selection is the process by which specied evolve over time. Individuals inherit traits or genes from their parents, or individual variation. Due to variation a species allows itself to live longer and survive by passing on the traits to the next generation.

How are humans influencing the process of evolution?

EVOLUTION
 

Humans are creating problems in the environment that causes survival of the fittest. Humans pollute ponds causing fish that can not handle the pollutants to die and the fish that can live. We create situations in which organisms have to fight to live, that are not natural.

How has the theory of evolution affected religious beliefs?

Evolution vs CreationismOr

Who was the other person who at the same time was thinking of a similar theory to Darwin's, what happened to him?

Darwin is better though!!!!!!!
 

Linnaeos was the other guy and he became big because he made a theory on evolution.

what was the guys name thats theory was if you put a dirty shirt and hay in a barn and leave it over night mice would appear?
did people believe his theory?
 

The "guy's" name was Jean-Baptiste Lamarck and he introduced the theory of spontaneous generation. Spontaneous geneeration stated that first there was nothing, and then all of a sudden, there are living organisms. An example is leaving a dirty shirt on the hay in a barn for a while and then suddenly, mice would appear; or maggots coming from raw meat. Many people and scientists believed in this theory back then and some people still believe it is true.

How did Darwin's finches represent natural selection? Describe some of their physical features and its purpose.

tweety tweet tweet!
 

Darwin's finches represented natural selection because their beaks had to do a lot with what their environment was. Over time the functions the beaks were used for changed and in return their beaks evolved. Directly, the changes in the beaks had to do with the changes in the food they were eating.

What is industrial melanism?

Click here for information on your second to last Bio Blog :'(
 

Industrial melanism is when over time the genetic differences between groups in different environments become apparent. It occurs in a species called the peppered moth. It has become more frequent since the beginning of the industrial age. The peppered moth had a light appearance so it was more noticeable against the sooty buildings. This made it easier for predators of the peppered moth to see it. The peppered moth than became a darker color due to mutations which made it hard for its predators to find again.



What is micro-evolution?

Micro-Evolution
 

Basically, micro evolution by definition, is the occurrence of small-scale changes in allele frequencies in a population, over a few generations of time. What pretty much happens is evolution on a small scale. Mutations, migrations, genetic drifts, and natural selection are all phenomenon that can cause micro evolution to occur. Contrasting this process is another process called macro evolution.


What is speciation, and what are some examples that we see of it that are exhibited around us, every day?

Best of luck.
 

Speciation is the process where a new species comes into existence.
Many times, geographic isolation occurs where a population is divided by a natural barrier (mountain/desert/river) caused by a natural disaster. This causes specific species to become isolated and eventually each group of species will become adapted to its specific environment. Also, species may become accidentally introduced into a new environment.

Question: How do we know about evolution? -What are some evidence

evidence?
 

We know about evolution because in the fossil record, there are many fossils documenting a clear trend from one species to transition species to another species. Some evidence includes transition fossils such as the one recently discovered named Ida.

what is the difference between Punctuated Equilibrium and Gradualism
 

Punctuated equilibrium is a theory in evolutionary biology which through sexual reproduction, everyone has a little change. This will soon develop into a local variation of the area. Gradualism is the belief that changes occur, or ought to occur, slowly in the form of gradual steps.

What is saltation?
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Saltation is a sudden change from one generation to the next. It is a large or very large change in comparison with the usual variation of an organism. Saltation is occasionally hypothesized, nongradual changes that are typical of standard concepts involved in neo-Darwinian evolution.

What are homologous structures?

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Homologous structures are characteristics shared by different species that are inherited from a similar ancestor. For example, the bone in a whale’s flipper is similar to the bones in a human’s arm and the bones on a chimpanzee’s arm. They are seen as evidence of evolution.

Name four types of adaptations and how they help a species survive. Give examples.

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The rockhopper penguin has webbed feet that help it survive by helping it propel itself through water easily so it can avoid pretators and catch its food.
Macaw birds have large beaks that help them crack open large nuts and reach the sweet fruit and pulp on the inside.
The jaguar had spotted fur that helps it blend in with the patches of sun that reach the rain forest floor. This helps them hide from their prey so they can catch food.
The scales on many snakes serve as protection where fur and feathers would not help. They also help to retain water in dry climates.

What is the purpose of mimicry? Name some animals that use different forms of mimicry.
If the #2 pencil is so popular, why is it still #2?

 

Mimicry is different from camouflage. As camouflage may be blending in with something, mimicry is being similar to another species. This is a very important technique, and many animals use it to their advantage.

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Why are adaptations so important, are how are they used to benefit the organism.
 

Adaptive traits are favorable characteristics that benefit organisms in their habitats. With natural selection, good traits will pass off to the offspring and the the later generations. Adaptation is the evolutionary process of an organism that becomes better suited for their environment. Adaptations allow an organism to survive. Without adaptations, many organisms will lose to competition.

Camouflage is an excellent adaptive trait. For example, a white rabbit could blend easily in snow. Also, echolocation of bats helps them find their prey.

Question: What is genetic shuffling? Why is there so many possible combinations of genes? Use this website to help you, but your review book may have more information.
 

Genetic shuffling is the mixing of genes to create new genetic cominations. There are so many possible combinations of genes because of the endless options of combinaitons. When organisms reproduce sexually, crossing over occurs creating variation.

How does crossing over occur?
CRoSSING OVAAA
 

Genetic shuffling is when there is a possibility to get different genes from each parent. For example, I have my mom's eye color but my dad's nose. There are so many possible combinations because of recombination.

Describe survival of the fittest.

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Crossing over is the rearranging of alleles in a chromosome. This is connected to evolution because it helps create biodiversity. Since the chromosomes in the gamete aren’t identical (because it is sexual reproduction) they need to cross over. During synopsis in meiosis parts of the homologous chromosomes can be interchanged. If these segments of chromosomes carry different alleles it results in a new gene combination.

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What were the results of the environmental conditions on the primitive earth?
 

link for silver's question


sorry i forgot to add it!
 

A. molecules in the primitive environment formed simple organic substances, such as amino acids. hydrogen, ammonia, water vapor, and methane are thoughtto be components in the early atmosphere.

Q. what are some possible outcomes of evolution. {look in the contents colum :)}

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BTW:...you didnt specify what kind of evolution you were talking about and i was going to ask a question about the evolution of dance but i thought it would be better if i didnt.
 

There are several possible outcomes of evolution. Adaptations to an environment, changes in body structure, new organs, and several other things can result as a result of evolution. These changes are usually gradual, and can take thousands of years to occur.

What was Lamarck's theory on evolution?
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HaHa! I love the Evolution of Dance! The second one is good too but I still love the first one the best!
Now back to biology, some possible outcomes of evolution: the behavior of the organism. Adaptations are an outcome of Natural Selection. Interaction between organisms in the same species can cause competition within the group. Outcomes of evolution are: adaptation, co-evolution, co-operation, Speciation, and Extinction.

Who is Lamarck? And why does
Mr. Johnson say he is a loser? (Think from Bio notes)

Lamarck is a loser!
 

well, lamark, is a loser ...
he believed that traits are passed on to offspring. Use & disuse.




What are the 5 'steps' to natural selection?







lovemesomewiki<3
 

the five steps of natural section are,
1) variation-Non identical
2)Inheritance- passing of traits
3)competition-to survive you fight for food.
4)selection- special selection of traits
5)Propagation- characteristics of a population change over time.


What are some of the experiments Darwin did about evolution?

Darwin experiments
 

some of the experiments Darwin did about evolution was like Darwin identified 13 species of finches in the Galápagos Islands. He observed that the Galápagos species differed from each other in beak size and shape. He also noted that the beak varieties were associated with diets based on different foods.



what are some of Darwins works


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Charles Darwin was an excellent writer with many famous works. Some of these books includes The Voyage of the Beagle, The Origin of Species, The Descent of Man, Selection in Relation to Sex, and The Expression of Emotions in Man and Animals.

What is Social Darwinism and who are some famous Social Darwinists?

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good morning!
:)
hj
 

1. Social Darwinism refers to various ideologies based on a concept that competition among all individuals, groups, nations, or ideas drives social evolution in human societies. The term draws upon the common use of the term Darwinism, which is a social adaptation of the theory of natural selection as first advanced by Charles Darwin.

Some Social Darwinists are Herbert Spencer, Thomas Malthus, and Francis Galton.

Who is Charles Darwin and explain his theory of Evolution?

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