Hello guys, Welcome to Africa's Largest Video Search Engine, and you are watching A2 Biology - Dihybrid inheritance + Unexpected phenotypic ratios (OCR A Chapters 20.3-4). and this video is uploaded by BioRach at 2019-05-28T07:24:04-07:00. We are just promoting this video only for entertainment and educational purpose only. I hop you like our Video Search Engine. [yR5lnGn2ZmY]
| Name | A2 Biology - Dihybrid inheritance + Unexpected phenotypic ratios (OCR A Chapters 20.3-4) |
| Video Uploader | Video From BioRach |
| Upload Date | This Video Uploaded At 28-05-2019 14:24:04 |
| Video Discription | Dihybrid inheritance shows how two genes are inherited instead of just one in monogenic inheritance. The classic example is Mendel's pea cross experiment, showing how the colour (Y vs y) and shape (R vs r) genes are inherited. However by using Punnett squares, we can only get the expected ratios/frequencies of offspring. We may observe in actual situations, that the offspring phenotypic ratios are different than what we expected. This is mainly due to two possible reasons: random fertilisation and autosomal linkage (and without crossing over occurring). Please like, share and subscribe for more content and comment below to let me know what you think! :) Facebook: BioRach - A-level Biology Online https://www.facebook.com/biorachproject/ Twitter: @BioRachProject https://twitter.com/BioRachProject?lang=zh-tw Background music: Ambiment - The Ambient by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100630 Artist: http://incompetech.com/ [yR5lnGn2ZmY] |
| Category | Education |
| Tags | A2 | Biology | dihybrid inheritance | mendel | pea | heterozygous | homozygous | dominant | recessive | phenotype | genotype | ratios | autosomal linkage | fertilisation | random | crossing over | chi squared test | epistasis | OCR |
