is a scientific theory
(independently) proposed by Charles Darwin
and Alfred Wallace
in 1858. Darwin is largely
credited with it, as he had been working on his theory
for several years, after traveling around the world with HMS Beagle.Simply
put; the theory proposes
the extant (and extinct) species of the world
all evolved over time, and still is, by natural selection
. The explanation for such changes
are that when one individual gain a trait that increases it's chances
of survival, it will more
offspring who carry the favorable trait. The offspring will also reproduce more
successfully, and so the trait will become dominant in a population
amount of time.
The theory is supported by modern science, both in the fossil record and even by observation.
Sadly, Darwin could not explain
all that he observed. A monk called Gregor Mendel
had more or less discovered genes at about
the same time, explaining how evolution works.
is extensive, for more information surf the grat
internet (just avoid the creationalists
who usually has not read much about
it) or even read one of Darwins
books; especially "on the origins of species".
Struggle for life, survival of the fittest.
The theory of evolution observed
Q: Why do antibiotics stop
working after a period of use?
bacteria are very good at adapting. Once one of the bacteria obtain resistance against the antibiotic, it will multiply (replacing the ones killed by the antibiotic) and even give the other bacteria the "recipe" (DNA)Another
one for you: a group
measured the beak size
of the birds on a secluded island
over several years. Then a storm came, not harming the birds, but reducing the number of small seeds
, leaving big seeds
the major food-source for the birds. When they
measured beak size
of the offspring, the average size
had increased - indicating the ones with larger beaks better at crushing large seeds
survived and reproduced.
one: Modern genetics
can analyze DNA (thats how you can detect who are related to each other in a family, and also find a killer from a strand of hair he left behind). When comparing DNA it is easy to see the DNA of modern
humans and modern orangutans
and other apes are extremely similar.