An ecological succession is a change that occurs in the biotic community of an ecosystem due to changes that occur in non-living factors (weather, climatic conditions, sunlight, water, soil, temperature and disaster or calamity) and time, until the ecosystem attains stability. A primary succession occurs in a region, which was previously colonized by living species but destroyed by a disaster like retreating glacier or volcanic eruption. The region is completely barren and exhibit no life form.
Therefore, the recolonization of an area that has been totally destroyed, is an example of primary succession.
Well Primary Succession means you are the first organisms of that area after it is destroyed completely or if it's new. Secondary Succession is when an area is not destroyed completely but the organisms that remain colonize the area again. I believe it's C.
<span>Proteins that are involved in the packaging of eukaryotic chromosome into "beads" called nucleosome are histones.</span>
A nucleosome is a segment of DNA wound in sequence around eight proteins called histones. Together the DNA and the histones form "beads" A nucleosome is the basic unit of DNA packaging in eukaryotic cells.
Karyotyping is <u>a test to examine chromosomes in a sample of cells</u>. This test can help identify genetic problems as the cause of a disorder or disease.
