NEET BIOLOGY

Detailed explanation-1: -Spindle fibers attach to the centromere through the kinetochore during mitosis. Kinetochore fibers are formed by kinetochores, which attach sister chromatids to spindle fibers. During mitosis and meiosis, kinetochore fibers and spindle polar fibers collaborate to regulate and divide chromosomes.

Detailed explanation-2: -Long protein fibers called microtubules extend from the centrioles in all possible directions, forming what is called a spindle. Some of the microtubules attach the poles to the chromosomes by connecting to protein complexes called kinetochores.

Detailed explanation-3: -During mitosis, spindle fibers attach to the centromere via the kinetochore. Kinetochores generate kinetochore fibers, which attach sister chromatids to spindle fibers. Kinetochore fibers and spindle polar fibers work together to manipulate and separate chromosomes during mitosis and meiosis.

Detailed explanation-4: -Kinetochore microtubules attach end-on to the kinetochore, which forms at the centromere of each duplicated chromosome. They serve to attach the chromosomes to the spindle. Overlap microtubules interdigitate at the equator of the spindle and are responsible for the symmetrical, bipolar shape of the spindle.

Detailed explanation-5: -Within the centromere is a region called a kinetochore, which functions as an attachment site for the mitotic spindle. The mitotic spindle is an array of microtubules responsible for the precise distribution of chromosomes to the daughter cells.