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Let's say there are 2 identical twin sisters and 2 identical twin brothers.
Let's say the twin sisters names are Amanda and Kathy.
The twin brothers names are Paul and Bill.
Amanda and Paul have a daughter.
Bill and Kathy have a daughter too.
Will both their daughters be genetically the same? And if so what is the name for it?

Not necessarily. Even if the starting genetical material may bear great resemblance, events that later happen during embryo growth will include shuffling of genetic material and recombination of paternal and maternal sets of genes. Add to it gene-environment effect which will all lead to the children looking different and/or behaving different. Only identical twins bear highest resemblance genetically. I am not aware of a name for such cousin born to twin parents marrying twins.


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Thanemozhi Natarajan


Answers in Genetics, genomics, cytogenetics of syndromes, congenital anomalies, cancer, clinical genomics and interpretation of omics data.


More than 10 years. Doctoral research thesis on Congenital anomalies and cytogenetics, Recurrent reproductive failure and chromosomal abnormalities. Postdoctoral experience in Breast cancer research. Current: Clinical Genomics and Pharmacogenomics.


Cancer Cell International, Cancer Epidemiology Biomarkers and Prevention, Breast cancer research and treatment, Indian Journal of Pediatrics, BMC Proceedings, Pharmacogenetics and Genomics, Human Molecular Genetics, Frontiers in Genetics, Cancer Biomarkers.

PhD Biomedical Genetics

Awards and Honors
University Grants Commission Award for pursuing PhD level research (India); Travel awards to attend conferences.

Past/Present Clients
Post doctoral experience Cancer research, molecular epidemiology Current: Clininical Genomics and Pharmacogenomics

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