BEGINNINGS OF GENETICS
Prepared by:
Althea Ver D. Amon
BSE SCI 2-1
HIPPOCRATES
Hippocrates’ theory is known as
the “bricks and mortar”
theory of genetics: states that
taxonomical material consists of
physical substances
ARISTOTLE
reasoned that blood was the basis
for passing on this generative
power to the next generation.
emphasized the importance of
blood in heredity.
CHARLES DARWIN
Darwinism
Father of Evolution
Interplay of three principles
variation, heredity, and
struggle for existence
Theory of Pangenesis
JEAN BAPTISTE LAMARCK
“inheritance
of
acquired
characteristics”
organisms altered their behavior
in response to environmental
change.
Matthias Schleiden,Theodor Schwann, and Rudolf Virchow
proposed the cell theory, stating that all
organisms are composed of basic
structural units called cells, which are
derived from preexisting cells
LOUIS PASTEUR
disproved the idea of spontaneous
generation, (the creation of living
organisms
from
nonliving
components
Living organisms were then
considered to be derived from
preexisting organisms and to
consist of cells.
GREGOR MENDEL
Father of Modern Genetics
Mendelian inheritance
worked on garden peas
(Pisum sativum)**
traits are passed from parents to
offspring in predictable ways.
WALTER SUTTON AND THEODORE BOVERI
They independently formulated the chromosomal theory of
inheritance, which states that inherited traits are controlled by genes
residing on chromosomes faithfully transmitted through gametes,
maintaining genetic continuity from generation to generation.
They linked their discoveries of the behavior of chromosomes during
meiosis to the Mendelian principles of segregation and independent
assortment