Biology, 14.04.2020 17:52 erinkiing

What did Lamark believe about evolution? Why is this not correct? What is the first common evolution misconception? What does evolution actually say? What do people commonly think ""survival of the fittest"" means? What does it actually mean to be the ""most fit""? Natural selection doesn’t happen at the organism level but at the level.

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Answer from: ganlysiai

Evolution

Explanation:

According to Lamarck's theory of evolution, fossils are the direct evidence of evolution and nucleotide evidences are the direct evidence of molecular evolutionThis theory also states that organs which are used in priority will develop and the organs which are not used by priority will disintegrate Lamarck said that vestigial organs in different organisms are the direct evidence of use and disuse of organsThis was not correct because organisms develop new characters according to their need in environmental conditions, these new characters are developed by character displacement and allowed by natural selection and not by Lamarck's theory According to survival of the fittest the individuals which have superior genotype will be more acclimatized for the changing environmental conditions and the individuals with inferior genotype cannot maintain themselves according to the changing environmental conditions thus eliminated The individuals with superior genotype are most fit for the changing environmental conditions thus survive well and gets opportunity to reproduce Every individual of a population have a selection pressure which decides that which will get opportunity to thrive well or will be eliminated from the population, this kind of selection pressure is called natural selection Natural selection promotes best fit genotype according to the changing environmental conditions and eliminates the other genotype thus leading to genetic drift

Answer from: Quest

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.

Answer from: Quest

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

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What did Lamark believe about evolution? Why is this not correct? What is the first common evolution...

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