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The ultimate source of genetic variation...

The ultimate source of genetic variation is `:`

A

Mutations

B

Natural selection

C

Isolation

D

Hormonal activity

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The correct Answer is:
A
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ARIHANT NEET-CHROMOSOMAL BASIS OF INHERITANCE-Chapter Exercises A Taking it together (Assorted Questions of the Chapter for Advanced level Practice )
  1. Cytoplasmic male sterility is passed down

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  2. Which one of the following carries extra nuclear genetic material ?

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  3. The ultimate source of genetic variation is :

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  4. How many linkage groups are present in female and male grasshopper rep...

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

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  6. Cis- trans expression of genes is an example of :

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  7. When an animal has both the characters of male and female,it is called...

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  8. Mutation altering nucleotide sequence within a gene are

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  9. the chance of elimination of genes from a small populaton is an exampl...

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  10. Lethal gene of Drosophila is

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  11. Smallest paart of DNA which takes part in crossing over is:

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  12. Assume that a cross over and resulting chiasma occurred between two ge...

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  13. A cell is heterozygous at three gene loci. How many different types of...

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  14. An exception to mendel's law is

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  15. Crossing over is nil between genes located near

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  16. XX-XO sex chromosome complement occurs in

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  17. Females are heterogametic amongst

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  18. A pair of genes are linked if their recombination frequency in test cr...

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  19. Increase in age decreases

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  20. Pentasomic can be denoted by

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