हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

A single base mutation in a gene may not ‘always’ result in loss or gain of function. Do you think the statement is correct? Defend your answer.

Advertisements
Advertisements

प्रश्न

A single base mutation in a gene may not ‘always’ result in loss or gain of function. Do you think the statement is correct? Defend your answer.

A single base mutation in a gene may not ‘always’ result in loss or gain of function. Do you think the statement is correct?

अति संक्षिप्त उत्तर
Advertisements

उत्तर

The statement is correct. Because of degeneracy of codons, mutations at third base of codon, usually does not result into any change in phenotype. This is called silent mutations.

shaalaa.com

Notes

Students should refer to the answer according to their questions.

  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Molecular Basis of Inheritance - SHORT ANSWER [पृष्ठ ४२]

APPEARS IN

एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 6 Molecular Basis of Inheritance
SHORT ANSWER | Q 13. | पृष्ठ ४२
नूतन Biology [English] Class 12 ISC
अध्याय 4 Principles of Inheritance and Variation
HIGHER ORDER THINKING SKILLS QUESTIONS | Q 27. | पृष्ठ २११

संबंधित प्रश्न

Write the contributions of the following scientists in deciphering the genetic code.
George Gamow; Hargobind Khorana; Marshall Nirenberg; Severo Ochoa


Answer the following question.
State the importance of a Genetic code in protein biosynthesis.


Differentiate between the genetic codes given below:
Unambiguous and Universal


Differentiate between the genetic codes given below:
Degenerate and Initiator


The first codon to be deciphered was ______ which codes for ______.


Give reasons:

Genetic code is ‘universal’.


Name the anticodon required to recognize the following codon: GCA.


DNA is a polymer of nucleotides which are linked to each other by 3’-5’ phosphodiester bond. To prevent polymerisation of nucleotides, which of the following modifications would you choose?


Genetic code is ______.


Because most of the amino acids are represented by more than one codon, the genetic code is ______.


The number of base substitution possible in amino acid codons is ______.


The change of the light coloured variety of peppered moth (Biston betularia) to its darker variety (Biston carbonarid) is due to ______.


Amino acids which are specified by single codons are ______.


Some amino acids are coded by more than one codon, hence the genetic code is ______.


If the sequence of bases in coding strand of DNA is ATTCGATG, then the sequence of bases in mRNA will be ______.


Which of the following organ is essential for photorespiration?


Genetic code translates the language of:


What would happen if in a gene encoding a polypeptide of so amino acid 25th (UAC) is match to UAA?


George Gamow suggested that each codon coding for an amino acid consists of ______


Frame shift mutations are caused by ______.


Statement I: The codon ‘AUG’ codes for methionine and phenylalanine.

Statement II: ‘AAA’ and ‘AAG’ both codons code for the amino acid lysine.

In the light of the above statements, choose the correct answer from the options given below.


Which of the following statements is the most appropriate for sickle cell anaemia?


Discuss the process of translation in detail.


Who proposed that the genetic code for amino acids should be made up of three nucleotides?


How many amino acids can be coded by a doublet codon system?


According to George Gamow's proposal from 1954, why is the genetic code a triplet code?


Which scientist developed a method for synthesizing RNA molecules with repeated known nucleotide sequences to help decipher the genetic code?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×