Biology, 06.12.2019 03:31 kaseyvn03

Populations evolve through mutations. what exactly are mutations? can mutations have effects, harmful effects or no effects at all?

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Mutations can be described as any changes which occur in the sequence of DNA. These changes might be natural or can be induced.

Mutations can be very harmful if the mutation causes a wrong protein to be formed. For example, a mutation can cause a suppressor oncogene to turn into a cancerous gene.

Mutations can be helpful too if the protein formed by mutation benefits the organism. For example, the rich-colour vision that humans have is due to mutations.

Sometimes, a mutation will not have a harmful or helpful effect. For example, if the mutation occurs in the non-coding part of the DNA, then it will not be harmful or helpful.

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answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation:

Answer from: Quest

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

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Populations evolve through mutations. what exactly are mutations? can mutations have effects, harm...

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