El splicing alternativo puede generar diferentes formas de un mRNA mensajero, a partir de un pre-RNA. De tal manera la expresión de un gen puede dar lugar a una familia de proteínas funcionales similares o muy diferentes. #science#biology#molecularbiology#genetics
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English version below the Spanish text.
Esta mañana fui presidenta de la primera mesa de exámenes finales virtuales de la cuarentena en la Carrera de Ciencias Ambientales de la Universidad del Salvador, en la que rindieron mis alumnos de primer año de la materia Biología. Como tal, hubo que conformar un tribunal en el cual estuve acompañada por las Licenciadas Claudia Jimenez y Norma Loto.
Como la plataforma BBC (Blackboard Collaborate) no deja ver a todos a la vez, tuve que armarme de paciencia para hacer este collage que nos quede de recuerdo de este día histórico recortando veinte capturas de pantalla. Creo que quedó bonito, y fue terapéutico después de varias horas de escuchar a los alumnos... 🙂👩🏫
This morning I was president of the first final examination virtual space on quarantine in the Environmental Sciences Career at the Salvador University, for my first-year students in BiologyA "court" had to be carried out and I was accompanied by my colleagues Claudia Jimenez and Norma Loto.
As the BBC (Blackboard Collaborate) platform does not allow everyone to see, I had to be very patient to make myself this collage with the purpose to remember this historical day by cutting out twenty screenshots! I think it finally looked pretty
and it was therapeutic after several hours of listening to the students ... ... 🙂👩🏫
Comparison of Southern, Northern, and Western blots. Size and amount of DNA, RNA, and polypeptides can be determined using similar blotting methods. DNA is in blue, RNA in red, and polypeptides in green. A marker lane is shown in the left of each gel to determine size. A eukaryote cell is shown, but the same methods can be applied to prokaryotes, too.
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During embryogenesis, a single cell must divide and differentiate into all the cells in the body and form all our different organs. The process of forming these organs is extremely complex and highly coordinated. These organs must form fast enough to support the embryo, but also ensure that the organ will function properly for the rest of our lives. It’s a sensitive and delicate time for the embryo, as any disturbances can have catastrophic effects.
One of my favorite parts of working in development is the fact that so many vastly different species look so similar as embryos. Another cool part is seeing organs grow that we typically think of as “post-mitotic” meaning they stop growing once we’re adults. This includes the heart and the brain. Studying how these organs form might not only help us understand certain congenital diseases, but also develop regenerative therapies to treat things like heart attacks and strokes. If we understand what makes the heart grow, maybe we can artificially grow one in a dish.
Shown here is a sagittal (sideways) section of a mouse embryo stained for neurons (magenta), muscle (cyan), and proliferating cells (orange). You can spot the heart and the tongue in blue in the middle of the image. The umbilical cord is in the bottom left.
I was lucky enough to see this beauty of a northern watersnake while walking down a creek! These snakes are among the most commonly encountered species throughout their range. This is for a variety of reasons, but the main ones are that they’re abundant and tend to hang out in places where they’re easily observed by people. As their name suggests, watersnakes are often found - you guessed it - near water! Because of that, they tend to include a lot of fish, amphibians, and other aquatic animals in their diets. Although they can be a bit high-strung when first cornered or captured, they will calm down with gentle handling after a couple minutes. As with most snakebites in NY, bites from them are considered medically insignificant and are really nothing worse than a scratch. People so often fear and hate these snakes because of how big and defensive they can be, but the truth is that they will choose to flee every single time when given the opportunity to do so. They are such an important species in our local wetland ecosystems in their roles as predator and prey, so consider yourself lucky whenever you spot one!