GCSE Biology - Why We Inherit Diseases From Our Family - Polydactyly & Cystic Fibrosis #75

[@Cognitoedu]

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Amadeus & Tom

[@sayfmiryearl6783]

such an underrated youtuber

[@Cognitoedu]

Thank you so much Sayf 🤩

[@NormalLifeGaming]

Great video on spreading awareness of cf

[@Scrypxx]

i passed my test because of u tyyyyyy

[@eveenamarybabu1202]

thank you so much ,i understand better now🤩

[@themogfather6320]

my son is missing

[@hydro9313]

I agree

[@Calfcart]

You have abandoned your child

[@kenziereally]

IVE ABANDONED MY CHILD. IVE ABANDONED MY CHILD IVE ABANDONED MY BOY.

[@saimabibi8190]

Awe bless

[@KannaJ-ot7he]

womp womp

[@georgevincent1552]

Thanks for the detailed video.

[@ゆじ-d5i]

Hello, i can't find this on the aqa spec do you mind adding it?

[@blastimer7067]

roses are red, violets are blue,
i was brought by a teacher
and so were you

[@blastimer7067]

@@rabbitman8535 good luck

[@blastimer7067]

@@rabbitman8535 jeez Well done

[@rabbitman8535]

@@blastimer7067 thank you.

[@cosmo8210]

@@rabbitman8535 want a medal?

[@rabbitman8535]

@@cosmo8210 wouldn't mind

[@nSackStyles]

My question is how can a child undergo Polydactyly condition when neither of his parents have Polydactyly.

[@elegantatrocity]

I’d say you’re talking about how it came to be in the first place? My guess would be a mutation or improper allele. Otherwise, if both biological parents have two recessive alleles, they wouldn’t pass it on to their offspring.

[@nSackStyles]

@@elegantatrocity There's a famous bollywood actor, Hrithik Roshan that has polycactyly condition, has an extra thumb.
But none of his parents have it.
Is it possible? If so, how?

[@elegantatrocity]

nSack “The vast majority of occurrences of polydactyly are sporadic, meaning that the condition occurs without an apparent cause - while some may be due to a genetic defect or underlying hereditary syndrome.”
It can apparently happen without a known cause? I’m guessing scientists are still looking into it.

[@qualily8286]

imagine if parents are Aa | Aa respectively, the polydactyly gene being recessive, there is a 25% or 1/4 chance of ofspring to be aa allele which means he has this condition. altho parent may not have the conditoon, the offspring may have it due to recessive gene. english not my first language so ignore me being trash at it :/

[@elegantatrocity]

Qualily I think polydactyly is a dominant condition. It’s the example of dominant I learned, and cystic fibrosis is an example of recessive.

[@resulhackr5527]

Amazing video

[@sarabear2327]

I was born with 6 fingers on each hand from my pinky. It simply tired off when I was a baby.

[@tedwbell2133]

thank you!!!!

[@leoqueenstyledrawing8904]

2 of my sisters had polydactyly but me and my fist older sister didn't

[@xlayy_000]

ooooooo

[@kxyy.]

Me and my brother both have polydactyly but no one in our family does, why?

[@Wandering1432]

Because of DNA mutation

[@ioanaalexndra]

thanks

[@summerrrrr8399]

IT'S POLYDACTYL

[@philanthropist2010]

Polydacytly is autosomal or sex linked disorder?

[@kxyy.]

Autosomal

[@kapurikei2900]

oh ok nice nice

[@daisycomedancing]

I don’t like the way you regard people without the inherited disorders as ‘normal’…

[@xlayy_000]

then how should he express that

[@GCSESimplified1]

how else are we supposed to know dumbass, we're here to revise not to argue about how people should be regarded.

[@darthyoda4934]

Well they are normal

[@davjuve]

i literally went from the website to here to find a comment like this🤣🤣🤣

[@Wandering1432]

Cry about it lil Chigga