Yes, this is possible - although it is relatively rare. A cat in heat releases her eggs about 24 hours after mating. Theoretically all sperms that have entered her the past day can fertilize each egg. If she mated with more than one cat within these 24 hours, there can be more than one different fathers.
Histones are a family of basic proteins that associate with DNA in the nucleus and help condense it into chromatin. Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around histones in order to fit inside of the nucleus and take part in the formation of chromosomes.nder the microscope in its extended form, chromatin looks like beads on a string. The beads are called nucleosomes. Each nucleosome is made of DNA wrapped around eight histone proteins that function like a spool and are called a histone octamer.
Four of the histones, H2A, H2B, H3 and H4, are involved in forming the nucleosome structure with DNA, and are referred to as core histones. Histone H3 and H4 are also involved in histone acetylation.