Genetics Questions

Which enzyme adds bases to a growing RNA strand?

What type of bond holds nucleotide bases together in a strand of DNA?

Which enzyme adds bases to a growing DNA strand?

what characteristics are purely determined by environmental factors?

what characteristics are purely determined by genotype and phenotype?

what characteristics are purely determined by genotype?

Positive superspiral appears .... of replication forkNegative super spiral appears..... of replication fork

Human genes always have ... dinucleotide at exon 3'end and .... dinucleotide at intron 5' end

Somatic cells usually.... telomerase activity

DNA ligase makes ....... ....... between synthesized molecules

Telomerase is an enzyme that has .... molecule in its structure

Bacterial and yeast DNA polymerases are marked I, II and III, they correspond to

which proteins insert breaks within DNA to relax torsionic tension

Transcription begins when an enzyme called _______ ________________ binds to the beginning of a gene on a region of DNA called the promoter.

Nucleotide segments of a DNA molecule that make up genes and are actually expressed in the phenotype of an organism are called ______________.

Portions of genes that actually get translated into proteins are called _______________.

Mutations that changes on nucleotide or just a few nucleotides in a gene are called ______________ mutation.

In eukaryotes, gene expression is related to the coiling and uncoiling of

The sequence of three nucleotides that code for specific amino acids or stop signals in the synthesis of protein is called a

The nitrogen containing base that is only found in RNA is