the nucleus is the center of heredity in a cell.
what is the center of heredity in a cell?
the nucleus
between 1877 and 1878, oscar hertwig published several studies on the fertilization of sea urchin eggs, showing that the nucleus of the sperm enters the oocyte and fuses with its nucleus. this was the first time it was suggested that an individual develops from a (single) nucleated cell. this was in contradiction to ernst haeckel's theory that the complete phylogeny of a species would be repeated during embryonic development, including generation of the first nucleated cell from a "monerula", a structureless mass of primordial mucus ("urschleim"). therefore, the necessity of the sperm nucleus for fertilization was discussed for quite some time. however, hertwig confirmed his observation in other animal groups, including amphibians and molluscs. eduard strasburger produced the same results for plants in 1884. this paved the way to assign the nucleus an important role in heredity. in 1873, august weismann postulated the equivalence of the maternal and paternal germ "cells" for heredity. the function of the nucleus as carrier of genetic information became clear only later, after mitosis was discovered and the mendelian rules were rediscovered at the beginning of the 20th century; the chromosome theory of heredity was therefore developed.
cell nucleus
heredity





























heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents. through heredity, variations between individuals can accumulate and cause species to evolve by natural selection. the study of heredity in biology is genetics.





























section::::overview.
heredity