Transcription of protein-coding genes in the eukaryotic nucleus a. produces mature mRNAs. b. is catalyzed by RNA polymerase II. c. is followed by translation in the nucleus. d. happens mostly in condensed heterochromatin. e. is initiated at about 60,000 origins of replication.
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
Transcription of protein-coding genes in the eukaryotic nucleus
a. produces mature mRNAs.
TRANSCRIPTION:-
During the process of gene expression, DNA is first copied into an mRNA molecule which determines the amino acid sequence of a molecule of protein. The RNA molecule is synthesized by using a portion of base sequences of a single strand of double stranded DNA. This single strand is called a template. Hence, the formation of an RNA transcript is facilitated by an enzyme, RNA polymerase. The process of formation of an mRNA molecule corresponding to a gene is called transcription.
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