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.
heâ¢redâ¢iâ¢ty. 1. the passing on of characters or traits from parents to offspring as a result of the transmission of genes. 2. the genetic characters so transmitted. 3. the characteristics of an individual that are considered to have been passed on by the parents or ancestors.. (Biology) the transmission from one generation to another of genetic factors that determine individual characteristics: responsible for the resemblances between parents and offspring.