PATHOLOGY

Detailed explanation-1: -Now that there are 20 chromatids, they should be in identical pairs of two (sister chromatids ) because replication has occurred. So, there would be 10 centromeres.

Detailed explanation-2: -The answer is 10. A centromere is a structure that joins together the two sister chromatids after the duplication of a chromosome. The centromere allows the tethering of a protein called kinetochore, which segregates the two chromatids so that each cell receives a complete copy of the chromosome.

Detailed explanation-3: -In this stage, each chromosome appears double and consists of two coiled chromatids joined by a centromere. Here, the organism starts with a diploid number of 20 (2n = 20), so the number of chromatids present at the end of mitotic prophase is 40.

Detailed explanation-4: -If there are 20 centromeres in anaphase, the dividing cell has 20 chromosomes. As a result, each pole of the dividing cell will receive 10 chromatids, and each chromatid will now become a chromosome for the daughter cell.