The result of synapsis and crossing of non-homologous chromosomes will be a reciprocal translocation.
Non-homologous chromosomes are the ones that do not belong to the same pair. They contain alleles for different genes. It is a rare event for non-homologous chromosomes to pair up unlike the homologous ones. For example, if a X chromosome and a Y chromosome pair up, it is a non-homologous pairing.
Reciprocal translocation is a type of mutation where two non-homologous chromosomes exchange the genetic material with each other. Since there is no loss of genetic material, these mutations are generally harmless in nature. However, it may cause infertility or miscarriage.
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