0 Question: What would happen if you were born with two y chromosomes? Keywords: chromosome, gender, genetics Asked by to Paul, Oliver, Judith, Gill, Gemma, Emma on 3 Jan 2019. This question was also asked by .
Gemma Chandratillake answered on 3 Jan 2019:
Humans need at least one X chromosome but males can have one X and two Ys, this condition is called XYY syndrome: https://rarediseases.info.nih.gov/diseases/5674/47-xyy-syndrome
XYY Syndrome
https://ghr.nlm.nih.gov/condition/47xyy-syndrome
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