Definition of knell. 1  transitive verb. : 2  to summon or announce by or as if by a knell. 3  intransitive verb. 4  1 : to ring especially for a death, funeral, or disaster : toll. 5  2 : to sound in an ominous manner or with an ominous effect.
For the journal, see Demography (journal) . Demography is the statistical study of populations, including of human beings. As a very general science, it can analyze any kind of dynamic living population, i.e., one that changes over time or space (see population dynamics).
A geneticist is a scientist who studies genetics, the science of heredity and variation of organisms. Some geneticists perform experiments and analyze data to interpret the in â¦ heritance of traits.A geneticist is also a Consultant or Medical Doctor who has been trained in genetics as specialization.nswer by Enlil. Confidence votes 7.2K. A geneticist is a scientist who studies heredity (genes, DNA) and variation in organisms. Typically a geneticist analyzes data from experiments or population observations to interpret the inheritance of traits in relation to disease.