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REDISCOVERY OF MENDEL'S LAWS (THE BIRTH OF GENETICS)
1. It was in 1900 that three botanist independently rediscovered the principles of heredity already worked out by Mendel. They were :-
(i) Carl Correns - Germany
(ii) Hugo de Vries - Holland
(iii) Erich von Tschermak - Austria
2. Correns give the two law of Mendelism - law of segregation and law of independent assortment.
3. Hugo de Vries also found out the paper of Mendel and got it published in "Flora" in 1901.
4. Bateson, Punnet and other subsequent workers found Mendel's work to be of universal application including animals.
What is the difference among smooth and rough endoplasmic reticulum? Ans) The endoplasmic reticulum is a fine membranous structure contiguous to the nuclear membrane and p
BASICS OF ENVIRONMENT We live in two world one is natural world of animals, plants, air, water and soil that was present since the evolution of earth. The other world is of soc
Which are the types of neurons that participate in the spinal arch reflex? Where are their cell bodies situated? In the arch reflex first a sensory neuron located in the gangli
Activators Activity of many enzymes is influenced by certain ions called as activators. Large number of enzymes such as hexokinase that require ATF are also in need of diva
EXAMPLES OF NATURAL SELECTION - 1 . INDUSTRIAL MELANISM - First studied by Fischer & Ford (1845) on pepperd moth (Biston betularia) of two types : grey moth (B.
how vagina is inserted in cock
FUNCTION S - (a) It is antagonistic to glucagon. Insulin decreases the level of glucose in the blood. It acts by increasing the rate at which glucose is transported out of the
Nuclear endosperm in angiosperm.
a well lablled diagram of a tilapia
NEURITE S - The processes of neurons are called neurites. These are of two types: dendrites or dendrons and an axon or axis cylinder or neuraxon. (a) Dendrites (Den
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