Sex Linked Traits: Baldness and Hemophilia

Sex Linked Traits: When genes on the X or Y chromosome code for particular traits, we call them sex-linked traits. This video reviews some common examples, such as male pattern baldness and hemophilia.
00:00-00:11 Introduction
00:11-00:34 Chromosome Counting
00:34-1:12 X and Y Sex Chromosomes
1:12-2:53 Sex Linked Recessive Trait: Hemophilia
2:53-3:15 Hemophilia Punnett Square
3:15-3:40 Royal Hemophilia Pedigree Chart
3:40-3:59 Summary
Avoid plagiarism! Cite BOGObiology!
[BOGObiology]. (2017, October 18). Sex Linked Traits: Royal Hemophilia. [Video File]. Retrieved from • Sex Linked Traits: Bal...
#sexlinkedtraits #genes #genetics

[@KingChiChi20]

I swear i passed my environmental science class thanks to this information. THANK YOU!

[@BOGObiology]

Glad to hear you passed! Sending love from Boston! -BOGO

[@jimstewart8687]

Excellent! Clear explanations, helpful use of graphics, and a very interesting historical application at the end. Well done!!!

[@BOGObiology]

Thanks, Jim! Glad to hear it was useful! Sending best wishes from Boston! -BOGO

[@sahilhoque1645]

@@BOGObiology Pre mature baldness is due to X Chromosome , is it not ???!
Please reply , I'm from INDIA ❤️

[@BLoom_Beats]

Great video my teacher recommended us to watch this for our test next week this really helps!

[@AngelYZ125]

Great explanations!

[@biologyaccountonly6760]

Thanks so much dear teacher. I enjoyed the video and understood a lot.

[@crystinamarie1]

Thank you!!!!

[@NoahSchuetzle]

thank you!!!!!! you were so infromal

[@camilamoncada8062]

thank you so much dear.😘

[@arleighharrett5253]

very easy to understand, Thanks for the video

[@BOGObiology]

Glad it was helpful, Arleigh! Sending lots of love from Boston! -BOGO

[@auhova.02]

Exciting video ever 📍❤️

[@praisejack9615]

Thank you for a clear explanation

[@BOGObiology]

Glad it was helpful! Sending love from Boston! -BOGO

[@rijubhattarai1]

Loved that last information 😚👌

[@NoahSchuetzle]

I LOVE U

[@BEASTGAMING-dk9te]

Thanks you

[@bayanahmad1063]

thank youuuuuuu

[@user-xx2rw6wi5u]

This helped me out a lot

[@NoahSchuetzle]

same

[@NoahSchuetzle]

i LOVE U SO MUCH

[@lakhandigga]

Thanks 🙂🙂

[@BOGObiology]

You're welcome! Glad the video was helpful! Sending love and best wishes from Boston! -BOGO

[@dogsonjupiter]

i appreciate u

[@BOGObiology]

I appreciate you, too!

[@sportsqbz8773]

Great Video! Quick Question- If a male that had Hemophilia had a son with a female that didn't have it, would the son just not have it at all. If they had a daughter, would she be a carrier?

[@sportsqbz8773]

Thanks

[@abcdefg-hv2ks]

It's an year old comment, but I thought I'd still reply if anyone has a similar question.
Using punnet squares, we can see that both daughters would be carriers, while both sons will be normal.

[@sportsqbz8773]

@@abcdefg-hv2ks Thanks for responding

[@gartyqam]

Consider a hypothetical situation that a female is a carrier of hemophilia, represented by "XHXh", and the male has hemophilia, represented by "XhY0", and they mate, then there are 4 possible outcomes for a monohybrid punnet square: "XHXh, XhXh, XHY, and XhY". Since hemophilia is a a recessive trait, there will be a 25% chance that a female will be a carrier, 25% chance that a female will have hemophilia, a 25% chance that a male will be normal, and a 25% chance that a male will have hemophilia -- in the respective mentioned order. The geneotypic and phenotypic ratio will be this 1:1:1:1, so it's not nearly impossible for females to have hemophilia, but rare.

[@gartyqam]

I think this is a better explanation than the video -- in my opinion.

[@BOGObiology]

So true, Derp! However, it's so rare that two people with the hemophilia gene would meet and produce a child that I went with a more common example. Up until the last hundred years or so, men with hemophilia often died young, without reproducing. With better medical treatment, however, it's possible that we'll start to see more of these kinds of scenarios -BOGO

[@kevinakimou9811]

My biology teacher in the 1970's told me that an adult female, double recessive with haemophilia would be likely to die or have severe anaemia or poor health after puberty due to menstruation, so an adult female haemophiliac is either extremely rare or almost impossible (perhaps more possible with modern medical management?).
This article:
www.haemophilia.org.au/about-bleeding-disorders/faqs/women/can-females-have-haemophilia
and
www.haemophilia.org.au/about-bleeding-disorders/women-with-bleeding-disorders/carrying-the-haemophilia-gene
suggest that single recessive females may not be fully haemophiliac, but may have a "mild" form.
This suggests that the notion of "recessive" gene is not so clearcut: the term "“symptomatic carrier" has been used.
There are apparently also different forms of haemophilia (different genes, though still sex-linked) just to complicate things.

[@deathknight1801]

Thank you BOGO,na bogo kog samot

[@BOGObiology]

You are welcome! Sending love from Boston -BOGO

[@trickytricy2767]

maka BOGO ning biology

[@CertifiedFresh7]

If my dad is the only person on either side of my family that’s bald how likely is it that I’ll be bald?

[@BOGObiology]

Probably not super likely.

[@jaydenpalaganas594]

Who else was sent here by Chteine?

[@camilamoncada8062]

wassup brothers

[@Synxify-uv6qw]

ASU KIDS WHERE U AT FROM SCIENCE CLASS IN MONGOLIA

[@BOGObiology]

Nice! Sending love and best wishes from Boston! -BOGO

[@ax6191]

25%, not 50%.

[@charlieplays6787]

hows it going my negas

[@NoahSchuetzle]

dont u mean vegas

[@camilamoncada8062]

nikka