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The genes for the eye colour and size of...

The genes for the eye colour and size of the wing in Drosophila are located on the same chromosome. They can be separated by

A

Non -disjunction

B

crossing over

C

Hybridization

D

Not be separated at any stage

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The correct Answer is:
B
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The equation of Schroedinger for the hydrogen atom in the time-independet, non-relativistic form is a partial differential equation involving the position coordinates (x, y and z). The potential energy term for the proton-electron system is spherically symmetric of the form -1//4pi in_(0) xx (e^(2)//r) . THus it is advantages to change over from the cartesian coordinates (x,y and z) to the spherical polar coordinates, ( r, theta and phi ). In this form the equation become separable in the radial part involving r and the angular part involving theta and phi . The probability of locating the electron within a volume element d tau = 4pi r^(2)dr is then given |Psi|^(2)(4pir^(2)dr) , where Psi is a function of r, theta and phi . With proper conditions imposed on Psi , the treatment yields certain functions, Psi , known as atomic orbitals which are solutions of the equations. Each function Psi correspods to quantum number n, l and m, the principal, the azimuthal and the magnetic quantum number respectively, n has values 1, 2, 3,...., l has values 0, 1, 2, ....(n-1) for each value of n and m (n-1) for each value of n and m (m_(l)) has values =1, +(l+1),...1,0,-1,-2...-l i.e., (2l+1) values for each value of l. In addition a further quantum number called pin had to be introduced with values +-1//2 . Any set of four values for n, l , m and s characterizes a spin orbital. Pauli.s exclusion principle states that a given spin orbital can accomodate not more than electron. Further the values l = 0, l=1, l=2, l=3 are designated s,p,d and f orbitals respectively. How many spin orbitals are there corresponding to n = 3?

The equation of Schroedinger for the hydrogen atom in the time-independet, non-relativistic form is a partial differential equation involving the position coordinates (x, y and z). The potential energy term for the proton-electron system is spherically symmetric of the form -1//4pi in_(0) xx (e^(2)//r) . THus it is advantages to change over from the cartesian coordinates (x,y and z) to the spherical polar coordinates, (r, theta and phi ). In this form the equation become separable in the radial part involving r and the angular part involving theta and phi . The probability of locating the electron within a volume element d tau = 4pi r^(2)dr is then given |Psi|^(2)(4pir^(2)dr) , where Psi is a function of r, theta and phi . With proper conditions imposed on Psi , the treatment yields certain functions, Psi , known as atomic orbitals which are solutions of the equations. Each function Psi correspods to quantum number n, l and m, the principal, the azimuthal and the magnetic quantum number respectively, n has values 1, 2, 3,...., l has values 0, 1, 2, ....(n-1) for each value of n and m (n-1) for each value of n and m (m_(l)) has values =1, +(l+1),...1,0,-1,-2...-l i.e., (2l+1) values for each value of l. In addition a further quantum number called pin had to be introduced with values +-1//2 . Any set of four values for n, l , m and s characterizes a spin orbital. Pauli.s exclusion principle states that a given spin orbital can accomodate not more than electron. Further the values l = 0, l=1, l=2, l=3 are designated s,p,d and f orbitals respectively. It is a basic fact that any two electrons are indistinguishable. 3 electrons are to be accomodated in the spin orbitals included under the designated 2p, conforming to the Pauli principle. Calculate the number of ways in which this may be done.

AAKASH SERIES-PRINCIPLES OF INHERITANCE AND VARIATION-EXERCISE-I
  1. The scientist used chromosomal movement to explain Mendel's laws

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  2. The terms linkage and recombination were coined by

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  3. Which of the following is suitable for experiment on linkage?

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  4. Parallelism between factors and chromosome led to the formation of

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  5. Dihybrid test cross ratio with 82% parental type and 18% recombinants ...

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  6. A dihybrid test cross ratio for two completely linked genes will be

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  7. Select the odd one out with respect to the chromosomal theory of inher...

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  8. To describe the generation of non parental gene combinations Morgan co...

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  9. Crossing over in diploid organisms is responsible for

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  10. The genes for the eye colour and size of the wing in Drosophila are lo...

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  11. Linkage in Drospohila was reported by

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  12. Frequency of recombination between gene pairs on the same chromosome a...

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  13. The frequency of crossing over would be higher if

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  14. A phenomenon which results in alteration of DNA sequences and conseque...

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  15. One centimorgan is equal to recombination frequency of

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  16. Which statement is incorrect about linkage?

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  17. In sickle cell anaemia, an amino acid substitution is

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  18. The linked characters would always inherit together till they are

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  19. Variation in DNA is due to

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  20. Mutation is due to

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