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After a mutation at a genetic locus the...

After a mutation at a genetic locus the character of an organism changes due to the change in :

A

Protein structure

B

DNA replication

C

Protein synthesis pattern

D

RNA transcription pattern

Text Solution

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The correct Answer is:
B
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Assertion: During mutation a gene may undergo a sudden change in expression due to the change in composition. Reason: Some genes mutate more than one and have more than two alleles.

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 ...... .

ARIHANT NEET-CHROMOSOMAL BASIS OF INHERITANCE-Chapter Exercise Medical entrances gallery (Collection of questions Asked in NEET and Various medical Entrance Exams)
  1. When a mutation is limited to be the substiution of one nucleotide for...

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  2. In the hexaploid wheat, the haploid (n) and basic (x) numbers of chrom...

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  3. What would happen if in a gene encoding a polypeptide of 50 amino acid...

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  4. Crossing over that results in genetic recombination in higher organism...

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  5. One of the parents of a cross has mutation in mitochondria. In that cr...

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  6. In mutational event, when adenine is replaced by guanine, it is a cas...

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  7. After a mutation at a genetic locus the character of an organism chan...

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  8. Which of the following symbols are used for represeting sex chromosome...

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

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  10. If the ratio between X- chromosomes and compete set of autosome is 0.5...

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  11. According to genic balance theory, which was given by CB Bridges, the ...

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  12. Genic blance theory of sex determination stated by CB Bridges is relat...

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  13. Which of the following is generally used for induced mutagenesis in cr...

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  14. Chromosome theory of inheritance was proposed by

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  15. Which of the chromosomal formulation is responsible for the expression...

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  16. Which of the following discoveries resulted in a Nobel Prize

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  17. There are three genes a,b,c percentage of crossing over between a and ...

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  18. In Drosophila, the sex is determined by

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  19. Two genes R and Y are located very close on the chromosomal linkage ma...

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  20. Which type of gene regulate sex-determination in Spinach plant

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