4 ms·
Slight correction; the genome is 50% maternal (egg), 50% paternal (sperm).
by car 12y ago
Slight correction; the genome is 50% maternal (egg), 50% paternal (sperm).
- pyre 12y agoFertilized egg = unfertilized egg + sperm :)
- car 12y agoWell, that read differently before.
- possibilistic 12y agoDon't forget mtDNA. That's maternal. Edit: usually. As for nuclear DNA, keep in mind all of the weird crossover failures that are rather common in a large population. These typically result in gene dosing problems and can lead to fetus inviability. Then consider the epigenome, selected immune recognition, and microbiome. These can be/are environmental. 50/50 is the textbook story we teach before undergrad. It's easier to learn and still conveys the central idea of the model.