Which of the following is not a stop codon?
1. UAA
2. UGA
3. UAC
4. UAG
The salient features of the human genome include all except:
1. About 1.4 million SNP locations
2. Functions known for less than 50% of the discovered genes
3. The actual number of genes and the initial estimates are remarkable similar
4. More than 98% of genome does not code for proteins
In a transcription unit, with respect to structural gene, the promoter is located:
1. Upstream and 5’
2. Upstream and 3’
3. Downstream and 5’
4. Downstream and 3’
DNA replication is correctly described as:
1. Semi-conservative and Continuous
2. Semi-conservative and Discontinuous
3. Conservative and Continuous
4. Semi-conservative and Semi-discontinuous
The unequivocal proof that DNA is the genetic material was provided by:
1. Avery, Macleod and McCarty
2. Hershey and Chase
3. Meselson and Stahl
4. Watson and Crick
In Griffith experiment, which of the following bacterial strains were capable of causing pneumonia in mice?
1. Live R
2. Bacteria strain without polysaccharide coat
3. Heat Killed S
4. Live R without capsule and Heat Killed S
Transcriptionally active chromatin is termed as:
1. Heterochromatin
2. Euchromatin
3. Prechromatin
4. Prochromatin
According to Erwin Chargaff, for a double stranded DNA
1. The ratios between Adenine and Thymine, and , Guanine and Cytosine are constant and equals one.
2. The ratios between Adenine and Thymine, and , Guanine and Cytosine are constant but is not equal to one.
3. The ratios between Adenine and Guanine, and , Thymine and Cytosine are constant and equals one.
4. The ratios between Adenine and Guanine, and , Thymine and Cytosine are constant but is not equal to one.
The backbone of a polynucleotide chain is made of:
1. Sugar and nitrogenous bases
2. Phosphate and nitrogenous bases
3. Sugar and phosphate
4. Sugar, phosphate, and nitrogenous bases
Which of the following is a pyrimidine base found in DNA?
1. Adenine
2. Guanine
3. Uracil
4. Cytosine