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Discontinuous variations are...

Discontinuous variations are

A

Mutations

B

Acquired characters

C

Essential features

D

Nonessential features

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The correct Answer is:
A
Mutation causes discontinous variations. Gene duplication is a type of chromosomes of salivary glands of Drosophile .
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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.

Darwin called discontinuous variations as

What was the name given to discontinuous variations by Darwin?

Give another name for discontinuous variations.

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. 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. 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. 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.

ERRORLESS -PRINCIPLES OF INHERITANCE AND VARIATION-Principles Of Inheritance And Variation
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  6. A person may have one gene for normal heamoglobin and one gene for sic...

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  7. If a diploid cell is treated with colchicine, then it becomes

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  8. Which one of the following mutation partially or fullt reverses the ha...

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  9. Polydactyly in man is due to

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  10. The number of chromosomes in Klinefelter's syndrome is

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  11. Philadelphia chromosome is

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  12. Which of the following chromosomal constituation refers to Jacob's syn...

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  13. The condition in which there are more than two complete set of chromos...

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  14. Down's syndrome is caused by an extra copy of chromosome number 21. Wh...

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  15. Polyploidy can be induced the application of

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  16. Given below is the representation of kind of chromosomal mutation what...

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  17. In the given human hand pedigree which character is represented and wh...

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  18. A recessive mutant is one which is:

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  19. Frequency of Down's syndrome increase when the matermal age is

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  20. Addition or deletion of a single nucleotide results in which type of m...

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