Homologous

1. General definition: from the same source, or having the same evolutionary function or structure. 2. Of chromosome s: identical with respect to gene content and linear ordering. Homologous chromosomes pair and recombine with one another at meiosis. 3. Of DNA /protein s: identical, or nearly identical nucleotide /amino acid sequence.

Similar or uniform, often used in the context of genes and DNA sequences. In the context of stem cells, the term homologous recombination is a technique used to disable a gene in embryonic stem cells.