Sister Chromatids vs Homologous Chromosomes
There lies a difference between homologous chromosomes and sister chromatids. As discussed above homologous chromosomes are pair of chromosomes that have the same structure and genes but may have different alleles of those genes. Whereas, sister chromatids are identical copies of a single chromosome. They are formed during the DNA replication process that occurs before cell division. Each chromosome consists of two identical sister chromatids which are connected by a protein complex called the centromere.
Homologous Chromosome – Structure and Functions
Homologous chromosomes refer to paired chromosomes that essentially have the same gene sequence, gene position (loci), centromere location, and chromosomal length. Though they may have the same genetic sequence and loci they may differ in alleles. The pair is comprised of a paternal chromosome and a maternal chromosome.
Just like homologous chromosomes, there are heterologous chromosomes as well. So let us understand what a chromosome is and then further about homologous chromosomes, and how is it different from heterologous chromosomes. In this article, we will read about homologous chromosomes, their structure, functions, and much more.
Table of Content
- Definition of Homologous Chromosomes
- What is a Chromosome?
- What are Homologous Chromosomes?
- Example of Homologous Chromosomes
- Structure of Homologous Chromosomes
- Difference Between Homologous Chromosome and Heterologous (Non-Homologous) Chromosome
- Sister Chromatids vs Homologous Chromosomes
- Functions of Homologous Chromosome