Molecular Basis of Inheritance

The experimental proof for semi-conservative replication of DNA was first shown in a

1. fungus
2. bacterium
3. plant
4. virus

Select the correct match :

1. Alec Jeffreys - Streptococcus pneumoniae
2. Alfred Hershey and Martha Chase - TMV
3. Matthew Meselson and F. Stahl - Pisum sativum
4. Francois Jacob and Jacques Monod - Lac operon

Select the correct match :

1. Ribozyme - Nucleic acid
2. F2 Recessive parent - Dihybrid cross
3. T.H. Morgan - Transduction
4. G. Mendel - Transformation

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

1. polysome
2. polyhedral bodies
3. plastidome
4. nucleosome

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?

1. AGGUAUCGCAU
2. UGGTUTCGCAT
3. ACCUAUGCGAU
4. UCCAUAGCGUA

All of the following are part of an operon except

1. an operator
2. structural genes
3. an enhancer
4. a promoter

The final proof for DNA as the genetic material came from the experiments of

1. Griffith
2. Hargobind Khorana
3. Avery, MacLeod and McCarty
4. Hershey and Chase

If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered ?

1. 1
2. 11
3. 333
4. 33

During DNA replication, Okazaki fragments are used to elongate

1. The leading strand away from replication fork
2. The lagging strand towards replication fork
3. The lagging strand away from the replication fork
4. The leading strand towards replication fork

Which of the following RNAs should be most abundant in animal cell ?

1. m-RNA
2. mi-RNA
3. r-RNA
4. t-RNA