molecular basis of inheritance
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molecular basis of inheritance - Marcador
molecular basis of inheritance - Detalles
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64 preguntas
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How are DNA fragments charged | Negatively charged |
Which RNAs should be most abundant in animal cell | R-RNA ( 80 percent of the cell ribosomal content) |
What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis | The smaller the fragment size, the farther it moves |
When does DNA replication in bacteria occurs | Prior to fission |
Where is rRNA formed ? | Nucleolus |
What are Ribosomes composed of ? | RNA + Protein |
CDNA probes are copied from the messenger RNA molecules with the help of what ? | Reverse transcriptase |
Out of the three bases of the codon which is the least important? | The third base of the codon is the least specific and hence least important. |
Which antibiotic inhibits interaction between tRNA and mRNA during bacterial protein synthesis? | Neomycin |
One gene-one enzyme hypothesis was postulated by | Beadle and Tatum |
The association of histone H1 with a nucleosome indicates | That DNA will be packed normally in the cells |
Removal of introns and joining the exons in a defined order in a transcription unit is called | Splicing |
The DNA is condensed into a Chromatin Fibre | The DNA is condensed into a Chromatin Fibre |
Semiconservative replication of DNA was first demonstrated in | Escherichia coli |
The Okazaki fragments in DNA chain growth | Polymerize in the 5'-to-3' direction and explain 3'-to-5' DNA replication |
Whose experiments cracked the DNAand discovered unequivocally that the genetic code is "triplet"? | Nirenberg and Mathaei |
Which enzymes will be produced in a cell in which there is a nonsense mutation in the lac-y gene ? | B-galactosidase |
What are the binding site of t-RNA with m-RNA and amino acids ? | M-RNA-anticodon loop and amino acid-CCA end |
Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it? | Adenine, Thymine - Purines |
In the DNA molecule | There are two strands which run antiparallel one in 5' ->3' direction and other |
RRNA is sythesized in | Nucleus |
In plants and animal cells chromatids are made up of | DNA,RNA HISTONE AND NON HISTONE |
Gene regulation governing lactose operon of E.COLI that involves the lac 1 gene product is | -ve and inducible because repressor protien prevents transcription. |
The most unstable RNA is | Heterogenous nuclear RNA |
Balbiani rings are found in | Polytene chromosomes |
Un DNA helix, cytosine is paired with guanine by | Three hydrogen bonds |
Transporon was discovered by | B.Mc Clintock |
Okazaki fragments form | Lagging strand |
Wobble hypothesis was given by | F.H.C. Crick |
What is a similar term for DNA fingerprinting | DNA profiling |
Which codon codes for the same information as UGC | UGU both code for cysteine |
TATA box of eukaryotic promoter lies | About 25 bp upstream of the transcription start site |
UUU codon goes with which amino acid | Phenylalanine |
AUG codon goes with which amino acid | Methionine |
Histones are basic protiens of major importance in packaging of eukaryotic DNA. DNA and histones comprise chromatin forming the bulk of eukaryotic chromosome | Histones are of five major types H1,H2A,H2B,H3 AND H4 |
MRNA is attached to the ribosome by which means | Protien ribophorin 1 and 2 |