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It is said that Mendel proposed that the...

It is said that Mendel proposed that the factor controlling any character is descrete and independent. His proposition was based on the

A

Results of `F_(3)` generation of a cross

B

Observation that the offspring of a cross made between the plants having two constrsting characters shows only one character without any blending.

C

Self pollination of `F_(1)` offsprings

D

Cross pollination of `F_(1)` generations with recessive parental.

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B
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"The factors for each pair of characters assort independently of the other pair" Which law of mendel explain this?

What are the characters Mendel selected for his experiments on pea plant?

What are the characters Mendel selected for his experiments on pea plant?

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

Bohr proposed his atomic model based on Planck.s quantum theory and derived following relations for one electron system in C.G.S. units : For H -atom : r_(n) = n^(2) xx r_(1), E_(n) = E_(1) xx Z^(2), u_(n) = (u_(1))/(n), u_(1) = 2.19 xx 10^(8) cm//sec., E_(1) = -13.6eV For 1 electron system, other than H r_(n) = (n^(2) xx r_(1H))/(Z), E_(N) = (E_(1H) xx Z^(2))/(n^(2)), u_(n) = (u_(1H) xx Z)/(n) . Later on de Broglie proposed the dual nature of electron and put forward his wave concept. The wave length of electron in an orbit was given lambda = h/mu The potential energy of electron in 3^(rd) Bohr orbit of H-atom is :

Bohr proposed his atomic model based on Planck.s quantum theory and derived following relations for one electron system in C.G.S. units : For H -atom : r_(n) = n^(2) xx r_(1), E_(n) = E_(1) xx Z^(2), u_(n) = (u_(1))/(n), u_(1) = 2.19 xx 10^(8) cm//sec., E_(1) = -13.6eV For 1 electron system, other than H r_(n) = (n^(2) xx r_(1H))/(Z), E_(N) = (E_(1H) xx Z^(2))/(n^(2)), u_(n) = (u_(1H) xx Z)/(n) . Later on de Broglie proposed the dual nature of electron and put forward his wave concept. The wave length of electron in an orbit was given lambda = h/mu The circumference (in m) of 3^(rd) Bohr orbit in H-atom is :

Which of the following group represents the characters selected for his expreiment in pea plant by mendel? A Size of the flower, position of seed, length of flower B. colour of the flower . Position of flower colour of the seed.

Explain in brief about the alternate methods to be followed to prevent the harmful effects of over usage of pesticides. (OR) Mention any four effective methods of controlling pests, which are less harmful on environment based on biological principles.

Which of the following statement is NOT true about the Mendel's selection of garden pea for his experiment write it. a. Well defined characters b. Bisexual flowers c. predominantly self fertilisation d. Cheap in cost

AAKASH SERIES-PRINCIPLES OF INHERITANCE AND VARIATION-EXERCISE -II (NCERT Examplar problems)
  1. All genes located on the same chromosome.

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  2. Conditions of a karyotype 2n+-1 and 2n+-2 are called

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  3. Distance between the ganes and prcentage of recombination shows.

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  4. If a genetic disease is transferred from a phenotypically normal but c...

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  5. In sickle cell anaemia, glutmic acid is replaced by valine. Which one ...

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  6. Person having geotype I^(A)I^(B) would show the blood group as AB. Thi...

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  7. ZZ/ZW type of sex determination is seen in.

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  8. A cross between two tall plants resulted in offspring having few dward...

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  9. In a dihybrid cross, if youget 9:3:3:1 ratio, it denotes that

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  10. Which of the following will not result in variations among siblings?

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  11. Mendel's law of independent assortment holds good for genes situated o...

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  12. Occassionally, a single gene may express more than one effect. The phe...

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  13. In a certain taxon of insects,some have 17 chromosomes and the other h...

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  14. The inheritance patterns of a gene over generations among humans is st...

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  15. It is said that Mendel proposed that the factor controlling any charac...

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  16. Two genes A and B are linked in a dihybrid cross involving these two g...

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  17. In the F(2) generation fo a mendelian dihybrid cross, the number of ph...

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  18. Mother and father of a person with O blood group have A and B blood gr...

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