Scientists and researchers who study hereditary processes
Geneticists
Advance in genetics research have occured since
The mid twentieth century
The history of genetics study spans a period of about
150 years
some of the earliest ideas about reproduction.... were the particulate theories developed in
Ancient Greece during the 4th Century BC
what was one of the reason these theories were innacurate?
they relied on observations unaided by the microscope
the use or investigation with the microscope
microscopy
first observed cells through a microscope
robert hooke
father of biology
Aristotle
noted that individuals sometimes resemble remote ancestors more closely than their immediate parents
Aristotle
the offspring is gradually generated from an undifferentiated mass by the addition of parts
Epigenesist
Announced the theory of natural selection
charles darwin and alfred russel wallace
book made by charles darwin
On the origin of species by means of natural selection
examined a cork
robert hooke
what did hooke see in a cork
honeycomb pattern of rectangles that reminded him of cells
hookes observations prompted scientists to
speculate that living tissue as well as nonliving tissue was composed of cells
performed microscopic studies and concluded in 1824 that plant and animal tissue is composed of cells
Rene dutrochet
All plants were structured of cells
Matthias Jakob Schleiden
suggested that animals were also composed of cellss
Theodor Schwann
all living things are composed of cells,, the simplest forms of life that can exist independently
Matthias Jakob Schleiden and Theodor Schwann
Cells can reproduce themselves
Rudolf Virchow
father of biology
aristotle
what was the series of theories that was published by charles darwin?
on the origins of species by means of natural selection (1859)
what did hooke examined using microscope?
cork
who concluded that both plant and anima tissue was composed of cells?
Rene Dutrochet
presented his theory that all plants were constructed of cells
Matthias jakob schleiden
suggested that animals were also composed of ccells
Theodor Schwann
who launched the theories of biogenesis when he posited in 1858 that cells reproduce themselves
Rudolf Virchow
The formation, structure, and function of cells
Cytology
what enabled scientists to identify parts of the cell
cytology
directs all cellular activites by controlling the synthesis of proteins
nucleus
mitochondria
organelles that catalyze reactions that produce energy for the cell
his contributions to genetics was evolutionary theory known as the gerplasm theory of heredity
August Weissmann
Builds darwin's idea that specific inherited characteristics are passed from one generation to the next
Germplasm theory of heredity by August Weissmann
weissmann asserted that the genettic code for each organism was contained in its
germ cells
produces cells that are genetically identical to the parent cells
mitosis
cell division that reduces the amount of genetic material in the gametes by one half
Reduction division (meiosis)
the first scientist to successfully refute the members of the sscientific community who believed that physical characteristics acquired through environmental exposure were passed from generation to generation