Resumen
Summary Gene technology 2
- Grado
- Institución
Biology A level revision notes on genetic technology
[Mostrar más]Vista previa 1 fuera de 5 páginas
Vista previa 1 fuera de 5 páginas
Añadir al carrito
Añadir al carrito
Vendedor
Seguir
mollybuckwald
Comentarios recibidos
Vista previa del contenido
PromotersThe expression of genes, such as those in the lac operon, is controlled by a promoter
– the region of DNA to which RNA polymerase binds as it starts transcription.
The promoter also ensures that it recognises which of the two DNA strands is the
template one. Within the sequence of nucleotides in the promoter region is the
transcription start point (the first nucleotide of the gene to be transcribed). The
promoter controls the expression of the gene and can ensure a high level of gene
expression. In eukaryotes, various proteins called transcription factors are also
required to bind to the promoter region or to RNA polymerase before transcription
can begin.
Gel electrophoresis
This is a technique used to separate different molecules, mainly DNA. This technique
involves placing a mixture of molecules into wells cut into agarose gel and applying
an electric field. The movement of charged molecules within the gel in response to
the electric field depends on:
Net charge – negatively charged molecules move towards the anode (+) and
positively charged molecules move towards the cathode (-). Highly charged
molecules move faster than those with less overall charge
Size – smaller molecules move through the gel faster than larger molecules
Composition of the gel – the size of the pores within the gel determines the
speed at which the fragments of DNA move
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller mollybuckwald. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for 8,62 €. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
45,681 summaries were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now