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.
The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. Most biological traits are under the influence of polygenes (many different genes) as well as the geneâenvironment interactions.