Although identical chromosomes have the same gene loci, they might have different alleles of the same gene. Identical copies of one another are created during DNA replication and are known as sister chromatids.
What are sister chromatids ?
A chromosome's identical copies that are created during DNA replication and are connected by a common centromere are referred to as sister chromatids. In other words, a sister chromatid might be considered as "one-half" of a duplicated chromosome. A sister chromatid pair is known as a dyad.
What are Homologous Chromosomes?
A pair of two chromosomes, usually one from the mother and one from the father. Homologous chromosomes, for instance, are the two copies of Chromosome 1 in a cell.
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