A short animation from the National Centre for Medical Genetics which explains what x-lined recessive genetic conditions are and what they mean for an affected person's offspring.
The mother can be a Carrier, but usually is unaffected because she has two X's (XX) if one of her X's is affected she is backed up by her second healthy X.
Actually, female who are affected by an X-linked recessive disorder is very very rare. In most cases the mother is a carrier with recessive abnormal X chromosome and normal X chromosome. There are actually 2 most common scenarios for : one is carrier mother (unaffected) with 1 abnormal X chromosome with normal father, another is normal mother with affected father. And another 2 that are not as common: mother is a carrier with affected father and both parents are affected (this one is not very common), The mother has the abnormal recessive gene on her X chromosome but it doesn't show any symptoms because she has another healthy X chromosome as a back up. Therefore, she is unaffected by it but she carries the gene. In order for a boy to be affected by the disease, the mother has to be a carrier (whether the father is affected or not--both have 25% chance of a boy being affected), and the mother can be affected (although it's rare) with or without an affected father, their son will have 50% of being affected. :)
BOTH ABDULLAH x linked RECESSIVE meaning that one is recessive and one dominant for woman then there is a chance that one of the X chromosomes affected be inherited from the mother so a boy will have X affected and Y which is not used
Music makes it feel like a true crime documentary. Good video though
Woah!! Thanks a lot! This is what I was searching for! Beautifully explained 🙏
HUGE lightbulb went off, just as I'm about to go take my OB test. THANK YOU!!
Off or on
Can't explain how much helpful it is❤❤❤❤❤
Her voice is relaaaaaaaaxing
Great video.simple and easy to understand.
THANK YOU this is exactly the video I needed
IN 1:24 MINUTE WHY IT IS UNAFFECTED MOTHER ?
The boy have one X and we have X linked disorder so, his mother maybe affected or carrier ?
is it right ?
The mother can be a Carrier, but usually is unaffected because she has two X's (XX) if one of her X's is affected she is backed up by her second healthy X.
Actually, female who are affected by an X-linked recessive disorder is very very rare. In most cases the mother is a carrier with recessive abnormal X chromosome and normal X chromosome. There are actually 2 most common scenarios for : one is carrier mother (unaffected) with 1 abnormal X chromosome with normal father, another is normal mother with affected father. And another 2 that are not as common: mother is a carrier with affected father and both parents are affected (this one is not very common), The mother has the abnormal recessive gene on her X chromosome but it doesn't show any symptoms because she has another healthy X chromosome as a back up. Therefore, she is unaffected by it but she carries the gene. In order for a boy to be affected by the disease, the mother has to be a carrier (whether the father is affected or not--both have 25% chance of a boy being affected), and the mother can be affected (although it's rare) with or without an affected father, their son will have 50% of being affected. :)
BOTH ABDULLAH x linked RECESSIVE meaning that one is recessive and one dominant for woman then there is a chance that one of the X chromosomes affected be inherited from the mother so a boy will have X affected and Y which is not used
BOTH ABDULLAH woman have two X X
What if affected man and carrier woman have children? Is it 1/4 healthy boy, 1/4 affected boy, 1/4 affected girl, 1/4 carrier girl?
do a punnett square for dihybrid cross
Did you find your answer, i'm keen to know as well, it's a nice question and seems right to me.
great video, but the background sound is loud and destructive
very clear video, thanks
How do you know whether or not there is a gene on the Y chromosome in males??
great video!
This seriously cleared my confusion.Thanks
Thanks
Nice videooo
Not forgetting G6PD deficiency...!
Like if you are here because your professor assigned you to watch this video.