A Level Biology (Year 13) "Epistasis" скачать в хорошем качестве

A Level Biology (Year 13) "Epistasis"

In this A level Biology video, we look at epistasis. First we explore what is meant by epistasis. We look at both recessive epistasis and dominant epistasis in multi-step pathways catalysed by enzymes. We then explore how coat colour in mice is determined by an epistatic effect between two genes and how this can affect the phenotype ratio in offspring. Image credits: Brown mouse https://commons.wikimedia.org/wiki/Fi... Tiia Monto, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons White mouse https://commons.wikimedia.org/wiki/Fi... Pogrebnoj-Alexandroff, CC BY 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons Black mouse https://commons.wikimedia.org/wiki/Fi... DataBase Center for Life Science (DBCLS), CC BY 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons Epistasis (modified by S Donnelly to alter allele symbols) https://commons.wikimedia.org/wiki/Fi... https://openstax.org/books/biology-2e... See page for author, CC BY 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons