Jenny Graves – Distinguished Professor of Genetics, Los Angeles Trobe University
It’s thought the bro and sis (who’ve identical genes from their mom yet not their dad) developed from an egg fertilised by two different semen at the moment that is same.
The very uncommon “semi-identical” Australian twins reported the other day would be the outcome of an event that is rare. It’s thought the cousin and cousin (who’ve identical genes from their mom not their daddy) developed from an egg fertilised by two various semen during the exact same minute.
In people, it is the semen that determines whether an embryo is pressed along a male or female development path. However in wild birds, it is one other way around. Eggs would be the determining aspect in bird sex.
There are some other fascinating areas of bird intercourse that aren’t distributed to people. Feminine wild wild birds appear to have some ability to get a handle on the intercourse of these chicks. Continue reading “The extremely uncommon “semi-identical” Australian twins reported the other day will be the consequence of an event that is rare.”