When dna replicates the chromosomes are attached with centromere.how are homologous chromosomes attached?

2 Answers
Feb 18, 2018

With a protein called Kinetochore

Explanation:

" The kinetochore is a protein structure on chromatids where the spindle fibers attach during cell division to pull sister chromatids apart Their proteins help to hold the sister chromatids together and also play a role in chromosome editing "
![https://en.wikipedia.org/wiki/Kinetochore]

https://study.com/cimages/multimages/16/Duplicated_Chromosomepng

Feb 21, 2018

During DNA replication, the chromosomes have not yet formed. Chromatin condenses to form chromosomes during prophase of mitosis, and prophase I and prophase II of meiosis.

Explanation:

Homologous chromosomes are pairs of chromosomes that are inherited from both parents. They have the same gene loci, but they may have different alleles (forms of genes). During prophase I of meiosis, the chromatids of a pair of homologous chromosomes may cross over, forming chiasmata at the point at which they trade genetic material.

http://www.yourarticlelibrary.com/biology/notes-on-the-process-and-mechanism-of-crossing-over/12069
Crossing over sometimes occurs during mitosis in somatic cells, but it is rare, and is suspected of allowing recessive cancer genes to be expressed.