Which of the following is incorrect for protein synthesis

1. Ribosomes are the cellular for protein synthesis

2. 23s rRNA act as catalyst for peptide bond formation in all organisms

3. UTR are required for efficient translation process

4.The ribosome proceeds to the elongation phase of protein synthesis

Untranslated regions (UTRs) are present

1. before and after the stop codon

2. after the start codon and before the stop codon

3. before and after the start codon

4. before the start codon and after the stop codon

Polypeptides are

1. dictated by DNA

2. represented by mRNA

3. Expresssion of t-RNA

4. Both 1 and 2

Protein synthesis takes place in

1. cytoplasm

2. nucleoplasm

3.  Both 1 and 2

4. none of these

During density gradient centrifugation, major peaks are formed by

1. bulk DNA

2. repetitive DNA

3. Genomic DNA

4. Both 1 and 3

During density gradient centrifugation, minor peaks represent

1. bulk DNA

2. repetitive DNA

3. Genomic DNA

4. Satellite DNA

Satellite DNA classification is based on

1. Base composition

2. length of segment

3. no of repetitive units

4. All of the above

Satellite DNA are

1. Protein coding

2. M-RNA coding

3. non- protein coding

4. satellite protein coding

What forms the basis of DNA fingerprinting

1. Genomic DNA

2. Bulk DNA

3. satellite DNA

4. Both 1 and 3

Satellite DNA shows

1. high degree of polymorphism

2. low degree of polymorphism

3. no polymorphism

4. None of these