Although Eid al-Adha is always on the same day of the Islamic calendar, the date on the Gregorian calendar varies from year to year, since the Gregorian calendar is a solar calendar and the Islamic calendar is a lunar calendar.id al-Adha in 2016 is on Sunday, the 11th of September. Based on sightability in. , in 2016 Eid al-Adha will start in North America a day later-on Monday, the 12th of September.
heredity. the transmission of genetic traits from parents to offspring. The hereditary material is DNA in the ovum and sperm, so that the offspring's heredity is determined at the moment of conception.Inside the nucleus of each germ cell are structures called chromosomes.he genetic transmission of traits from parents to offspring. The hereditary material is contained in the ovum (oocyte) and sperm, so that the child's heredity is determined at the moment of conception. Chromosomes and Genes.
However, it is thought that between each generation the epigenetic marks are erased in cells called primordial gene cells (PGC), the precursors to sperm and eggs. This âreprogrammingâ allows all genes to be read afresh for each new person â leaving scientists to question how epigenetic inheritance could occur. The new Cambridge study initially discovered how the DNA methylation marks are erased in PGCs, a question that has been under intense investigation over the past ten years.