Cell: The Unit of Life — BIO BOTANY STD 11 — Question
Tamilnadu BoardEnglish MediumSTD 11BIO BOTANYCell: The Unit of Life5 Marks
Question
Write in detail about the 3 types of centromere in eukaryotes.
✓
Answer
There are three types of centromere in Eukaryotes. They are as follows:
Point Centromere: The type of centromere in which the kinetochore is assembled as a result of protein recognition of specific DNA sequences. Kinetochores assembled on point centromere bind a single microtubule. It is also called as localized centromere. It occurs in budding yeasts.
Regional Centromere: In regional centromere where the kinetochore is assembled on a variable array of repeated DNA sequences. Kinetochore assembled on regional centromeres bind multiple microtubules. It occurs in fission yeast cell, humans and so on.
Holocentromere: The microtubules bind all the along the mitotic chromosome. Example: Caenorbabditis elegans (transparent nematode) and many insects.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.