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Discontinuous variations are...

Discontinuous variations are

A

essential features

B

acquired characters

C

non-essential changes

D

mutations

Text Solution

Verified by Experts

The correct Answer is:
D
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Assertion Darwin regarded discontinuous variations more important than continuous variations. Reason The survial of the fittest is a result of selection and proliferation of fittest organisms.

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Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Change in sequence of nucleotide in DNA is known as ...... .

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Substitution of a purine with another purine is known as ...... :

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Which is the main category of mutation ?

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Aneuploidy which occurs due to loss of a complete homologous pair of chromosomes is :

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Give one word for the following: Type of mutation that arise due to change in a single base pair of DNA.

A2Z-PRINCIPLES OF INHERITANCE AND VARIATION-SECTION C: PREVIOUS YEARS' EXAMINATION QUESTIONS (AIIMS QUESTIONS)
  1. Discontinuous variations are

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  2. Mirabilis jalapa shows

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  3. Frameshift mutation occurs when :

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  4. Pure line breed refers to

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  5. If a homozygous red flowered plant is crossed with a homozygous white ...

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  6. One of the genes present exclusive on the X- chromosome in humans is c...

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  7. Given ahead is a pedigree chart of a family with five children. It sho...

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  8. How many different types of gametes can be formed by F(1) progeny, res...

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  9. grain clour in wheat isdetermined by three pairs if polygenes. Followi...

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  10. The "cri-du-chat" syndrome is caused by change in chromosome structure...

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  11. Given below is a highly simplified representation of the human sex chr...

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  12. XO-chromosomal abnormally in human beings causes

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  13. A normal woman whose father was colour blind, is married to a normal m...

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  14. Mother and father both have blood group 'A'. They have two children on...

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  15. Three children in a family have blood types O,AB and B respectively. W...

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  16. What occurs in point mutation?

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  17. A female with underdeveloped feminine character possess

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  18. A parent having autosomal dominant disease then what will be the proba...

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  19. A man and a woman, who do not show any apparent signs of a certain inh...

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  20. Linkage is broken by

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