Genotype Expression

053 - Environmental Genotype Effects
Paul Andersen explains how genotypes can be expressed or not based on changes in the environment. He starts with a brief description of the Himalayan rabbit and how melanin production can be disrupted by high temperature. He explains how this could be advantageous in both the arctic fox and hare. He explains how flowers can vary temperature based on the pH of the soil. He finally describes gene expression in Lac+ bacteria.
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Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
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Creative Commons Atribution License
All of the images are licensed under creative commons and public domain licensing:
Algkalv. Terianniaq Qaqortaq (Arctic Fox), Photographed in Kulusuk, Greenland, February 22, 2010. Own work. commons.wikimedia.org/wiki/Fil....
Architetto--Coniglio, n.d. openclipart.org/detail/25631/a....
"File:Lac operon1.png." Wikipedia, the Free Encyclopedia. Accessed December 1, 2013. en.wikipedia.org/wiki/File:Lac....
"File:MacConkey Agar with LF and LF Colonies.jpg." Wikipedia, the Free Encyclopedia. Accessed April 7, 2014. en.wikipedia.org/wiki/File:Mac....
Ryckaert, Marc. Hydrangea Macrophylla, June 24, 2007. Own work. commons.wikimedia.org/wiki/Fil....
---. Hydrangea Macrophylla, June 24, 2007. Own work. commons.wikimedia.org/wiki/Fil....
Tille, Andreas. English: Arctic Fox in Summer (taken in Numedal Zoo), July 22, 2003. Own work. commons.wikimedia.org/wiki/Fil....

[@benyamzenebe262]

Thank you Mr. Andersen

[@sherryzeng5057]

Thank you! This video is very helpful!

[@naomiibhahe8266]

Thanks sir, your videos are very helpful

[@ilikebigbooty]

single handedly reviving my biology grade

[@gallardo8816]

ong bruh

[@jacksontomich1858]

This is Rad and I love this. Liked and Subscribed!!!!!

[@pootytang2872]

thx for the subtitles

[@noorafghanistann]

thank you!

[@jyotighosh3629]

These videos are really helpful man!!

[@mohammedsadekon]

very helpful :)

[@chrisnowell2k10]

So how does the environment affect the lac operon? It's not clear...

[@joeweimholt9652]

CAN WE GET THIS BRUV TO A MILLON SUBS?

[@hs2593]

lol

[@hs2593]

i see u

[@Sharon_C397]

So was bacteria the gene expression for plants???

[@murielllee]

I sure as hell would not be watching this if it weren't for my biology project

[@thomasschwartz6617]

Thanks for clarifying that it is a drawing.

[@thegenie8286]

Mr. Lai is the G

[@goldenmoondrawer6784]

Wouldn't that be cold for the bun tho?

[@HonestlyAnnaFun]

Yea, it's another form of abusive animal testing.

[@jasminko4025]

@@HonestlyAnnaFun I know its terrible.

[@misamisa62]

This dude is so cool

[@carmelamorano6296]

Suddenly I want a Himalayan rabbit

[@jamyalawanii8164]

Humans also have melatonin but it just helps us sleep. It is a natural hormone and you can also get melatonin pills if you have trouble sleeping. Melatonin often causes vivid dreams as well.

[@joeylarson9885]

Hi

[@ashleygleason8272]

You are producing hydrangea wrong

[@itsyaboyrobbb]

Mr.Anderson you are a hoot, haha,name on the back of bunny, who is this guy???

[@freddyjohnston6768]

This video isn't entirely correct, and a bit misleading. The phenotypic expression of arctic hares is the other way around; cold temperatures make the hare turn WHITE, not black. This provides camouflage in the snow, and as there is no melanin in the hair shaft, the air pockets in the hairs provide more insulation.

[@lonababery]

you so funny

[@jasonforrester1138]

Lol

[@NormanYeung19]

make your name on it HAHA you're so sick :D

[@Kris-oi3gs]

Lol, that’s so mean to put an ice pack on a bunny. That’ll be so cold, especially because it’s shaved and naked underneath. But that’s beside the point of the video 😭

[@jasminko4025]

I know its so sad for the bunny. Poor bun.

[@joeweimholt9652]

WHAT IS OBAMA

[@hs2593]

but is obama?

[@nugget6050]

JOE OMG OMG 😳 I FOUND UR COMMENT!!!1111!!1