Sisters get really annoyed when their mum tries to get them to say a particular word
Quadruplets, far scarcer than twins or triplets, had around 3,556 sets recorded globally up to 2007. Their frequency has increased due to advances in fertility treatments, with about 70 sets of identical quadruplets existing worldwide. Various combinations of identical and fraternal siblings are common among quadruplets, including configurations like three identical siblings with one fraternal … Read more