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ddd [48]
3 years ago
10

What has occurred when large numbers of species die out over a short period of time?

Biology
2 answers:
GarryVolchara [31]3 years ago
7 0
The thing which could be occurred when large numbers of species die out over a short period of time is mass extinction. If plenty of species dissapear due to particular circumstances it means that they become extinct. This usually happens due to some global events or environmental <span>changes that occured too rapidly. 
</span>
vodka [1.7K]3 years ago
5 0
Its going to be Mass Extinction
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chromatin modifications that can be passed on includes epigenetic modifications that are heritable changes made to the chromatin structure that does not involve the DNA sequences. Some epigenetic modifications include DNA methylation and Histone modifications. examples of histone modification include acetylation, methylation, phosphorylation, ubiquintylation etc. All these function either in allowing the DNA become more accessible to transcritional factors or vice versa. for exmple, histone tail acetylation encourages unwounding of nucleosomes allowing transcriptional factors to have access to the DNa while histone tails methylation further tightens the nucleosomes promoting condensation of the chromatin.

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