Lecture One Flashcards
(20 cards)
A branch of biology that deals with the principles of heredity and variation in all living things
Genetics
What is the Greek world for genetics
Gen
What does gen means
To become or to grow into something
Who termed the word gen
William Bateson 1905
Who is the Australian monk who began the science of genetics
Gregor Mendel 1822-1884
Why is the other term for genes
Elementary factors
When did Gregor discovered that hereditary characteristics were determined by elementary factors
1866
What are the two important attributes of the gene?
The gene is inherited from generation to generation
The gene provides information regarding the structure, function, and other biological properties of the characteristics of trait it controls
Before models time, heredity was thought to be
Blending
This theory is proposed that semen was formed everywhere in a man’s body part from where it was formed
Theory of pangenesis
Who made the theory of pangenesis
Aristotle (384-322 BC)
It is based on the pangenesis theory, the fundamental chechanism of evolutionary change
The theory of inheritance of acquired characteristics
Who invented the theory of inheritance of acquired characteristics
Jean Baptiste de Lamarck (1744-1829)
The first who challenged the theory of pangenesis
August Weismann
Proposed that germ plasm or sex cells perpetuated themselves in reproduction generation after generation
Germ plasm theory by August Weismann
Also means cells of all other parts of the body
Somatoplasm
Observed that although hybrids between species might have shown uniform appearance, their fertile offspring would usually produce considerable diversity
Kolreuter 1733-1806
Who is the father of genetics
Gregor Mendel
What is the important contribution of mendel
The demonstration that the appearance of different characters in heredity followed specific laws that could be determined by counting the diverse kinds of offspring produced from any set of crosses
Who independently duplicated mendels experiment
Carls correns in Germany
Erick con tschermak in austria
Hugo de vries in Netherlands
