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Lack of independent assortment of two ge...

Lack of independent assortment of two genes A and B in fruit fly Drosophila is due to

A

Crossing over

B

Repulsion

C

Recombination

D

Linkage

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The correct Answer is:
D
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Independent assortment of genes does not take place when:

Independent assortment of genes does not take place when:

Assertion: Law of independent assortment holds good for the gene pairs that occur in different pairs of the chromosomes. Reason: It is the chromosome and not the individual gene which segregates during gamete formation.

Mendel's law of independent assortment holds good for genes situated on the

Mendel's law of independent assortment holds good for genes situated on the

Describe the two situations in which the independent assortment of genes results in 50 per cent recombination.

Select the correct option w.r.t law of independent assortment (a) It can be explained by using monohybrid cross (b) Inheritance of one character is dependent on another character (c) This law is not applicable universally (d) It was proposed by Bateson

T.H. Morgan while going on walk, found a fruit covered with flies. He took the flies to the laboratory. He performed experiments for several generations and was surprised to observe that some characters do not obey Mendelian principle of independent assortment. Draw the diagram of physical basis of this type of inheritance.

T.H. Morgan while going on walk, found a fruit covered with flies. He took the flies to the laboratory. He performed experiments for several generations and was surprised to observe that some characters do not obey Mendelian principle of independent assortment. Fill in the blanks: The tendency of certain traits of two characters to be inherited together generation after generation is called __. The tendency of traits of two characters to separate in certain generations is______.

Mendel law of independent assortment does not hold true for the genes that are located closely on

ALLEN-GENETICS & MOLECULAR BASIS OF INHERITANCE AND MUTATION-EXERCISE-I (CONCEPTUAL QUESTIONS)
  1. One of the genes present exclusively on the X- chromosome in humans is...

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  2. The recessive genes located on X-chromosome in humans are always

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  3. Lack of independent assortment of two genes A and B in fruit fly Droso...

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  4. A normal woman whose father was colour blind marries a normal man .the...

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  5. If father is normal while mother is carrier of haemophilia

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  6. Which of the following show linkage group in coupling phase :-

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  7. The longer the chromosome of an organism, the more genetic variability...

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  8. Which statement is incorrect about linkage-

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  9. A woman with normal vision, but whose father was colour blind, marrie...

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  10. Haemophilia is more commonly seen in human males than in human females...

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  11. Had Mendel decided to study those traits together which are determined...

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  12. Mendel formulated the laws of heredity considering seven pairs of cons...

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  13. If Mendel had studied the seven traits using a plant with 12 chromosom...

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  14. Linkage in plants was first shown in

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  15. With increasing age the linkage becomes :-

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  16. Coupling and repulsion theory of linkage was given by

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  17. If there were only parental combinations in F(2) of a dihybrid cross t...

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  18. Linkage was discovered by

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  19. A dihybrid plant with incomplete linkage on test corss may produce how...

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  20. How many linkage group are there in bacteria E. coli :-

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