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Evolution
The scientific theory according to which populations change gradually through a process of natural selection.
5,264 Questions
What indicates that evolution is occurring in a population in genetic terms?
In terms of a population, evolution is just the change of allele frequencies over time. Natural selection can cause certain advantageous alleles to increase in frequency, and detrimental alleles to decrease in frequency.
What do organisms in the intertidal zone need to do to survive?
they need to discover food have the ability to prevent drying out they die out by not getting exposed to the air im not good but this is all i know p.s go to this link for more help www.google.com and www.ask.com ----
What adaptations are necessary for organisms that live in the intertidal zone?
organisms need to adapt to dramatic changes in temperature,moisture,and salinity and must be able to withstand the force of wave action
What statements the one that best reflects an anti- imperialist attitude is?
"It is not necessary to own people to trade with them."
Why are molecular clocks not accurate when making comparisons between distantly related organisms?
Because rates of divergence are not static, but variable. The more distantly related the organisms, the longer the period of divergence. The longer the period of divergence, the more room there is for variability in the rate of divergence, the less accurate an estimate will be.
Why did the Tennessee Supreme Court ignore the First Amendment in State v Scopes?
The State of Tennessee v. John Scopes, (1925)
Scopes went to trial immediately before the US Supreme Court began incorporating the First Amendment to the States in Gitlow v. New York, 268 U.S. 652 (1925). At the time Scopes' case was heard, there was no obligation on the part of Tennessee to abide by the First Amendment of the US Constitution.
Scopes v. State, 154 Tenn. 105, (1927)
The Tennessee Supreme Court affirmed the trial court's decision on appeal in Scopes v. State, (1927), and rejected Scopes' First Amendment argument on the grounds that Tennessee was permitted to regulate his speech in the classroom because he was an "employee of the state of Tennessee or of a municipal agency of the state" and under contract to work for an institution of the state. The Court held that Scopes' First Amendment rights were only abridged while performing an official service (teaching) for the state, but were untouched elsewhere.
What kind of animal is the gummy shark?
The gummy shark, Mustelus antarcticus, is a shark in the family Triakidae. It is a slender grey shark with white spots along the body and flat plate-like teeth for crushing its prey.
Of course "gummy shark" can also refer to Gummis Carcharhiniformes, a small, mostly translucent invertebrate. They are typically blue except for their white belly. They are on the same evolutionary branch as the related Gummis Ursis (the gummy bear), Gummis Oligochaeta , (the gummy worm), Gummis Pices (the Swedish Fish), Gummis Pediatricus (the jelly baby) and Gummis Amphibia (the red frog).
The smallest unit of evolution is the population?
Yes, populations evolve. Individuals/genes are selected.
How can many different plants and animals live in same environment?
Because millions of years of evolution has made them adapt to their environment and interact with it to mutual benefit.
Take the simple act of insects and bees eating pollen from flowers: the insect benefits because it is able to feed itself (and thus survive) by eating some of the large amounts of pollen available in a single flower while at the same time the flower benefits from the insect because some of the pollen sticks to the insect's body and thus helps the flower procreate.
There are multiple similar beneficial relationships between animals and plants, between plants with other plants and between animals and animals (IE, small fish cleaning the eyes of larger fish because they feed on the bacteria living there while the large fish benefits because it maintains good eye sight).
Yes. All life that exists on Earth today evolved from earlier lifeforms.
Do perch and chimp share a common ancestor?
Yes, but it is way way back (probably over 300 million years ago).
Was John Scopes found guilty in a court of law for teaching evolution in a Tennessee public school?
Yes. According to Wikipedia: "The Scopes Trial, formally known as The State of Tennessee v. John Thomas Scopes and commonly referred to as the Scopes Monkey Trial, was an American legal case in 1925 in which a substitute high school teacher, John Scopes, was accused of violating Tennessee's Butler Act, which made it unlawful to teach human evolution in any state-funded school." It was overturned at a later date.
No. Humans evolved from a common ancestor we have with today's "great" apes (chimpanzees, orangutans, gorillas). This is proven specifically for human evolution by ERVs and the fused chromosome #2.
Brain coral is just an example of Pareidolia... the phenomena of the human mind to see patterns in things that aren't really anything (like religious images in toast, faces in mountain sides, etc).
-rapid speciation
-sexual selection
How do jellyfish defy evolution?
I actually believe that jellyfish confirm instead of defy evolution.
While many details of the phylogeny of Cnidarians (sea anemones, corals, hydras and jellyfish) have yet to reach scientific consensus, the overall structure of the evolutionary tree has recently started to come into focus with the help of molecular analysis. The large and diverse phylum Cnidaria diverged from the Bilateria phylum about 600 million years ago. It is currently undecided whether the diploblastic (two-layered) condition of cnidarians results from a secondary simplification of a triploblastic ancestor of bilaterians, or from a diploblastic common ancestor, since cnidarians possess most of the genes that are implicated in mesoderm (middle layer) development in bilaterians. The expression of these genes in modern cnidarians does not confirm the simplification hypothesis, however, since bilaterians may well have co-opted their function after divergence. Future molecular studies will likely resolve this issue.
Early in its evolutionary history, the Cnidaria phylum split into two major lineages: the class Anthozoa (anemones and corals), and the superclass Medusozoa. Medusozoans encompass three classes, Hydrozoa (hydras and hydromedusae), Scyphozoa (true jellyfishes), and Cubozoa (box jellies). Most medusozoans generally alternate between an asexual polyp phase and a sexually reproducing medusa (jellyfish) phase. Certain lineages subsequently lost their medusa phase, such as freshwater hydras.
I would link to the relevant scientific papers supporting my view, but links are not permitted here. However, it is certainly clear that evolution is not defied by cnidarian phylogeny.
When did Eisenhower mandate evolution?
President Eisenhower did not mandate evolution, this is a myth as far as my research has shown. As a matter of fact he was a staunch believer in Creationism. See link: http://www.icr.org/article/presidential-support-for-creationism
Ahem... hacking is not a good idea. Hackers are cheaters and don't deserve their games. Is that answer good enough for you, punk? PS cheater TT_TT
If genetic mutation almost always leads to sterilization and death then how can evolution be true?
Genetic mutation does not always lead to sterilization as you point out. This however is not the way evolution happens. Evolution occurs mainly through small adaptive changes over a long period of time that are not mutations. Evolution does not happen suddenly.
What is the main source in the 'theory of evolution' of life?
Charles Darwin. in his life, he traveled many different places and countries. in each country he found that the animals he saw in the previously explored coountry were similar to animals in that country. he observed and recorded their habits and concluded that animals evolved from simpler beings:)
What level do humans occupy on an ecological pyramid?
Humans occupy the highest trophic level in an ecological pyramid, known as the tertiary consumers. This means they are at the top of the food chain and primarily feed on organisms from lower trophic levels.
How comparative morphology support theory of evolution?
Look to the morphologies of all mammals and see rather easily how closely related they are in comparison to the more distantly related morphologies of all reptiles.
Ancestral traits, such as tetropodal arrangement of limbs and then derived differences between mammals and reptiles. Reptiles having scales and mammals having hair.
It depends, all it indicates that the base is the parental or evolutionary old species from which the new ones arrived.
The virtue that enables you to give god first place in your life?
When people give god first place in their lives, it is known as faith. This is a religious practice, and is not related to science or evolution in any way.
