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Bbrhuft t1_j51ith5 wrote

Reply to comment by suvlub in Given that reproduction is difficult or impossible when both animals have different numbers of chromosomes, how did so many species evolve to have so many different numbers of them? by MercurioLeCher

Here's the reference:

>Robertsonian translocations occur in approximately one in every 1000 newborns. Although most Robertsonian translocation carriers are healthy and have a normal lifespan, they are at increased risk of spontaneous abortions and risk of producing unbalanced gametes and, therefore unbalanced offspring. Here we reported a previously undescribed Robertsonian translocation.

Song, J., Sun, L., Xu, S., Liu, N., Yao, Y., Liu, Z., Wang, W., Rong, H. and Wang, B., 2016. A family with Robertsonian translocation: a potential mechanism of speciation in Humans. Molecular Cytogenetics, 9(1), pp.1-7.

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