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प्रश्न
Who is the pioneer of modern genetics?
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उत्तर
Gregor Johann Mendel
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संबंधित प्रश्न
"A trait may be inherited, but may not be expressed." Justify this statement with the help of a suitable example.
How do Mendel's experiment show that traits are inherited independently?
Mendel in one of his experiments with pea plants crossed a variety having round seed with one having wrinkled seeds. Write his observations, giving reasons, of F1 and F2 progeny
List any two contrasting characters other than roundness of pea plants that Mendel used in his experiments with pea plants.
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as:
How is the equal genetic contribution of male and female parents ensured in the progeny?
A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the result in F1 progeny?
A man having blood group O marries a woman having blood group B and they have a daughter. What will be the blood group of the daughter?
What will you get in the F1 and F2 generations in the following cross?
Pure tall pea plant × Pure dwarf pea plant
What are the units of heredity.
When two parents are crossed, the offspring are referred to as :
recessives
test cross
F1 generation
F2 generation
For his experiments on heredity, Mendel used :
papaya plants
potato plants
pea plants
pear plants
In the human blood grouping, the four basic blood types are type A, type B, type AB, and type O. The blood proteins A and B are :
(a) simple dominant and recessive traits
(b) incomplete dominant traits
(c) codominant traits
(d) sex-linked traits
One of the following traits cannot be inherited. This one is :
(a) colour of eyes
(b) colour of skin
(c) size of body
(d) nature of hair
List two differences in tabular form between dominant trait and recessive traits. What percentage/proportion of the plants in the F2 generation/progeny were round, in Mendel's cross between round and wrinkled pea plants?
Define Heredity. Give two examples.
Name the following:
The basic units of heredity.
