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 the start codon and before stop codon

2. after the start codon and before the stop codon

3. before and after the start codon

4. before start codon and after stop codon

Polypeptides are

1. dictated by DNA

2. represented by mRNA

3. Expresssion of t-RNA

4. Both A and B

The percentage of base sequences, that are dissimilar among humans, is

1. 99.9%

2. 0.01%

3. 0.10%

4. 1.01%

Differences in sequence of DNA make every individual unique in their

1. total number of nucleotides

2. phenotypic appearance

3. both A and B

4. None of these

DNA fingerprinting is used to compare

1. similar sequences between two individuals

2. dissimilar sequences between two individuals

3. 3 million base pairs of two individuals

4. Both B and C

DNA fingerprinting identifies differences in

1. repetitive DNA

2. bulk DNA

3. satellite DNA

4. Both A and B

During density gradient centrifugation, major peaks are formed by

1. bulk DNA

2. repetitive DNA

3. Genomic DNA

4. Both A and C

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