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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

Repulsion

B

Recombination

C

Linkage

D

Crossing over

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

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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

AAKASH SERIES-PRINCIPLES OF INHERITANCE AND VARIATION-EXERCISE -II
  1. Human males are hemizygous for

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  2. Males always inherit these traits from the female parents

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

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  4. An individual homozgous for genes cd is crossed with wild type and F(1...

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  5. A test cross of F(1) flies +a/+b produced the followings, ++/ab(R) 9...

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  6. Assume that genes a and b are linked and show 40 % reombination. If ++...

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  7. In a linear chromosome map, distances between 4 loci is as follows, a-...

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  8. What will be the phenotypic ratio in a situation of complementary gene...

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  9. If gene freuency between genes a and c 2%, b and c 13%, b and d 4%, a ...

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  10. The crossing over between homologous chromosomes never exceeds beyond

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  11. Cis tans expression of genes is an example of

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  12. In a genetic cross having recessive epistasis, F(2) phenotypic ratio w...

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  13. Independent genes that copy other genes so as to produce a similar eff...

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  14. Chromosome map is useful for

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  15. The percentage of recombination involving the seed shape and seed colo...

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  16. Genetic map is one that

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  17. Distance between the genes and percentage of recombination shows.

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  18. Type of gene mutation which involves replacement of purine with pyrimi...

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  19. Mutations induced by 5-bromo uracil are

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  20. Given below is the representation of a kind of chromosomal mutation: ...

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