is there is any theroy in heredity
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yes , Mendel's law..........
aakriti18:
plz tell that law ..i can't find that
it is experiment based on pea plant
oo thanku soo much u was totally confused in this
i was?
or u was?
Answered by
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HEYA...
Answr...
yes...
There are some theories related to heredity..
Mainly George Mendel gave this theory.
Heredity Genetic: Theory # 1. Preformation:
This theory was proposed by two Dutch biologists, Swammerdam and Bonnet (1720-1793). This theory states that a miniature human called homunculus was already present in the egg and sperm. In other words, a miniature human was performed in the gametes.
The development of zygote resulted only in the growth of miniature human, who was already present in the egg and sperm. However, this theory was soon given up because this could not be proved scientifically.
Heredity Genetic: Theory # 3. Acquired Characters:
This concept was proposed by Lamarck (1744—1829), a French biologist. This theory states that a new character once acquired by an individual shall pass on to its progeny. It means if a man develops a strong muscle by exercise all his children will have strong muscle.
On the other hand, if a person becomes weak all his children will be weak. This theory was disproved by Weismann. He cut the tail of mice for 22 successive generations and always got the baby mice with tail. Thus, this theory was soon given up.
Heredity Genetic: Theory # 5. Germplasm:
This theory was advocated by August Weismann (1889), a German biologist. This theory states that body tissues are of two types, viz., germplasm and somatoplasm. The germplasm refers to the reproductive tissues or cells which produce gametes.
Heredity Genetic: Theory # 4. Pangenes:
This theory was proposed by Charles Darwin (1809—1882), an English naturalist. This theory states that very small, exact but invisible copies of each body organ and component (called gemmules) are transported by the blood stream to the sex organs. These invisible copies of each body organ are called the gemmules.
hope it's helpful...
Answr...
yes...
There are some theories related to heredity..
Mainly George Mendel gave this theory.
Heredity Genetic: Theory # 1. Preformation:
This theory was proposed by two Dutch biologists, Swammerdam and Bonnet (1720-1793). This theory states that a miniature human called homunculus was already present in the egg and sperm. In other words, a miniature human was performed in the gametes.
The development of zygote resulted only in the growth of miniature human, who was already present in the egg and sperm. However, this theory was soon given up because this could not be proved scientifically.
Heredity Genetic: Theory # 3. Acquired Characters:
This concept was proposed by Lamarck (1744—1829), a French biologist. This theory states that a new character once acquired by an individual shall pass on to its progeny. It means if a man develops a strong muscle by exercise all his children will have strong muscle.
On the other hand, if a person becomes weak all his children will be weak. This theory was disproved by Weismann. He cut the tail of mice for 22 successive generations and always got the baby mice with tail. Thus, this theory was soon given up.
Heredity Genetic: Theory # 5. Germplasm:
This theory was advocated by August Weismann (1889), a German biologist. This theory states that body tissues are of two types, viz., germplasm and somatoplasm. The germplasm refers to the reproductive tissues or cells which produce gametes.
Heredity Genetic: Theory # 4. Pangenes:
This theory was proposed by Charles Darwin (1809—1882), an English naturalist. This theory states that very small, exact but invisible copies of each body organ and component (called gemmules) are transported by the blood stream to the sex organs. These invisible copies of each body organ are called the gemmules.
hope it's helpful...
can u plz tell that law
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