Classification Part 2 - A Level Biology

Understand the limitations of the definition of a species as a group of organisms with similar characteristics that interbreed to produce fertile offspring.
Understand why it is often difficult to assign organisms to any one species or to identify new species.
Understand how gel electrophoresis can be used to distinguish between species and determine evolutionary relationships.
Know that DNA sequencing and bioinformatics can be used to distinguish between species and determine evolutionary relationships.
Understand the role of scientific journals, the peer review process and scientific conferences in validating new evidence supporting the accepted scientific theory of evolution.

[@amirah3791]

there's a huge lack of edexcel biology videos on youtube - this channel is a huge help in last minute revision! if i manage a decent mark next week, it's all due to you mr exham!

[@hiyamjaffacake2045]

nothing more satisfying than not having to panic when I don't understand a biology concept because I can just watch a ten minute video and reach undefinable levels of clarity. Cheers, your videos are saving my grades!

[@MrExhambio]

My pleasure !

[@heroicforce9949]

I really not the type of guy to comment on UA-cams videos
but I've only been watching your vid for a year now and you have helped me a lot
most other a level/gcse are brief but yours are detailed and professional
helped me a lot during the pandemic where my school didn't do much online learning and we were falling behind until i found your video
thank you

[@justbecauseitsfun]

Great stuff man. Keep it up. We need a video on Teeth. GCSE level.

[@graceseo4020]

최고에요~감사합니다♡

[@umalkhayrdaahir3301]

Wow