Who Carries the Gene for Twins? Understanding Genetic Factors Behind Fraternal Twins
Discover how women carry the gene for fraternal twins due to hyperovulation and why identical twins occur randomly.
Video transcript
Women carry the gene for fraternal (non-identical) twins. It is influenced by a gene that causes hyperovulation, or the release of multiple eggs during ovulation. If a woman inherits this gene, she is more likely to have fraternal twins. Identical twins are not influenced by genetics but occur randomly when a single fertilized egg splits.
Questions and answers
Which parent passes the gene for twins?
Women carry and pass the gene that influences the likelihood of having fraternal twins, due to a tendency for hyperovulation.
Are identical twins influenced by genetics?
No, identical twins occur randomly when a single fertilized egg splits and are not influenced by genetic factors.
What causes a woman to have fraternal twins?
Fraternal twins occur when a woman releases multiple eggs during ovulation, a condition influenced by a specific gene related to hyperovulation.
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