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Select the correct statements :- (A) M...

Select the correct statements :-
(A) Mutation causes changes in the genotype and the phenotype of an organism.
(B) Chromosomal aberrations are commonly observed in cancer cells.
(C) Sickle cell anemia is a classical example of point mutation.
(D) Deletions and insertions of base pairs of DNA causes frame shift mutations.

A

A, B and D

B

A, B and C

C

A, C and D

D

A, B, C and D

Text Solution

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The correct Answer is:
D
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Which type of mutation is caused by deletions and insertions of base pairs of DNA?

State True or False (i) Chromosomal aberrations are commonly observed in cancer cells (ii) Mutation is the only phenomenon that leads to variation in DNA.

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Read the following five statements (A to E) about cancer and select the option with all correct statements: (A) Cancer cells do show a property called contact inhibition. (B) Cancer is one of the most dreaded diseases of humam beings. (C)Cancer causing viruses called oneogenic viruses have ganes called viral oncogenes. (D) Ionising rediations like X-rays and gamma rays and non-ionizing radiations like UV cause DNA repair and prevent cancer. (E) Cancer detction is based on biopsy and histopathological studies of the tissue.

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 ?

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