Molecular Basis of Inheritance · Question 31

Which one of the following is the sequence on corresponding coding strand, if the sequence on mRNA formed is as follows 5′ AUCG AUCG AUCG AUCG AUCG AUCG AUCG 3′?

1. 3′ UAGC UAGC UAGC UAGC UAGC UAGC UAGC 5′
2. 5′ ATCG ATCG ATCG ATCG ATCG ATCG ATCG 3′
3. 3′ ATCG ATCG ATCG ATCG ATCG ATCG ATCG 5′
4. 5′ UAGC UAGC UAGC UAGC UAGC UAGC UAGC 3′

The process of translation of mRNA to proteins begins as soon as:

1. The small subunit of ribosome encounters mRNA
2. The larger subunit of ribosome encounters mRNA
3. Both the subunits join together to bind with mRNA
4. The tRNA is activated and the larger subunit of ribosome encounters mRNA

DNA polymorphism forms the basis of:

1. Genetic mapping
2. DNA fingerprinting
3. Both genetic mapping and DNA fingerprinting
4. Translation

Read the following statements and choose the set of correct statements: Choose the correct answer from the options given below :

1. (B), (D), (E) only
2. (A), (C), (D) only
3. (B), (E) only
4. (A), (C), (E) only

If a geneticist uses the blind approach for sequencing the whole genome of an organism, followed by assignment of function to different segments, the methodology adopted by him is called as :

1. Sequence annotation
2. Gene mapping
3. Expressed sequence tags
4. Bioinformatics

If the length of a DNA molecule is 1.1 metres, what will be the approximate number of base pairs?

1. 3.3 109 bp
2. 6.6 109 bp
3. 3.3 106 bp
4. 6.6 106 bp

In an E. coli strain i gene gets mutated and its product cannot bind the inducer molecule. If growth medium is provided with lactose, what will be the outcome?

1. Only z gene will get transcribed
2. z, y, a genes will be transcribed
3. z, y, a genes will not be translated
4. RNA polymerase will bind the promoter region

Ten E. coli cells with 15N-dsDNA are incubated in medium containing 14N nucleotide. After 60 minutes, how many E. coli cells will have DNA totally free from 15N?

1. 20 cells
2. 40 cells
3. 60 cells
4. 80 cells

In lac operon, z gene codes for

1. Transacetylase
2. β-galactosidase
3. Permease
4. Repressor

Given below are two statements In the light of the above statements, choose the correct answer from the options given below:

1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect