Gene flow is the migration of genes or alleles from one population to another. Gene flow occurs when the movement of genes is followed by... View Article
Gene flow is an important factor for transferring genetic diversity in populations and changing allele frequency of a population. Gene flow... View Article
Gene flow is caused due to migration and subsequent interbreeding with new population or gametes movement such as by pollination. Human assisted... View Article
Gene flow or gene migration is the movement of genes from one population to another. An example of gene flow is the interbreeding between... View Article
Cells regulate protein synthesis or gene expression at various levels. Gene expression in eukaryotes is regulated at the transcriptional level,... View Article
The three post-transcriptional modifications are splicing, capping and tailing. Transcription is the formation of RNA from DNA. The genetic... View Article
Translation in prokaryotes is mostly regulated at the initiation step. The translation is regulated by the accessibility of ribosomes to the... View Article
Regulation of RNA splicing is a post transcriptional regulation of gene expression. In splicing, non-coding regions known as introns are excised... View Article
An example of activator protein is CAP or catabolite activator protein. It is responsible for positive regulation of gene expression. It promotes... View Article
In prokaryotes, gene expression is mostly regulated at the initiation site of transcription. The activity of RNA polymerase to recognise the... View Article
Internal factors that can affect gene expression are hormones, metabolic products and gender. The external factors that affect gene expression... View Article
Gene expression refers to the formation of functional products directed by genetic information. Genes are expressed in terms of protein... View Article
MicroRNA or miRNAs can regulate gene expression. They regulate gene expression at the post-transcriptional level. They repress translation or... View Article
Environment plays an important part in gene expression. Environmental factors such as temperature, diet, drugs, chemicals, mutagens, oxygen... View Article
The positive control of gene expression refers to the case when a gene is expressed in presence of an activator or inducer. If the positive... View Article
Gene expression can be regulated at the transcriptional level. The amount of mRNA that is produced from the particular gene in the DNA is... View Article
Regulation of gene expression ensures that homeostasis is maintained. It controls the synthesis of different types and amounts of proteins... View Article
Negative gene regulation suppresses gene expression, e.g. repressor binds to the operator region and prevents transcription of the operon.... View Article
Gene expression is highly regulated and depends on the requirement of protein and changing environment. E.g. if E. coli. do not utilise lactose... View Article
