Hey, thanks for uploading these. I find biology interesting and I'm trying to learn it and I find your lectures easy to follow, you're a good teacher because I have small brain damage and from that I find it hard to learn, but I can understand something's and just re watch what I don't, but your good at teaching it. Again thanks for uploading these and your an awesome teacher 😀 EDIT; Sorry I should have called you an awesome professor not teacher.
34:10 - you can't have crossing over in non homologous chromosomes like sex chromosomes because any address given in one chromosomes can't fit any address on the other chromosomes. It can be done on homologous chromosomes which are different only on alleles.
There is a blood clotting gene on the X chromosome? Does this have anything to do with hemophilia? For example, if the ability to clot is damaged on one x, and you're a male, you have it? And, if that is the case, why can women not present hemophilia? Couldn't clotting ability theoretically be damaged on both Xs? Or am I way off base on this? Also, men are more likely to be colour blind than women. Could that also be due to having only one x so the risk of issues with that gene is more significant for men? I know you said cones have nothing to do with whether you're male or female, but we DO see more colour blindness in males, don't we? Edit: Oh you followed up with sex DEVELOPMENT. My original question is still making me curious though. Is this why things like hemophilia and colour blindness affect men either exclusively, or more often?
Great lecture always enjoyable. Note that David Page's work shows the extra X chromosome on females is not totally inactivated. The Y chromosome is not totally for sex identification only. There are at least 13 genes from Y chromosome that are expressed in cells all over the body. For females, these 13 genes are expressed in the "inactive" X chromosome.
Hey, thanks for uploading these.
I find biology interesting and I'm trying to learn it and I find your lectures easy to follow, you're a good teacher because I have small brain damage and from that I find it hard to learn, but I can understand something's and just re watch what I don't, but your good at teaching it.
Again thanks for uploading these and your an awesome teacher 😀
EDIT; Sorry I should have called you an awesome professor not teacher.
34:10 - you can't have crossing over in non homologous chromosomes like sex chromosomes because any address given in one chromosomes can't fit any address on the other chromosomes. It can be done on homologous chromosomes which are different only on alleles.
There is a blood clotting gene on the X chromosome? Does this have anything to do with hemophilia? For example, if the ability to clot is damaged on one x, and you're a male, you have it? And, if that is the case, why can women not present hemophilia? Couldn't clotting ability theoretically be damaged on both Xs? Or am I way off base on this? Also, men are more likely to be colour blind than women. Could that also be due to having only one x so the risk of issues with that gene is more significant for men?
I know you said cones have nothing to do with whether you're male or female, but we DO see more colour blindness in males, don't we?
Edit: Oh you followed up with sex DEVELOPMENT.
My original question is still making me curious though. Is this why things like hemophilia and colour blindness affect men either exclusively, or more often?
Great lecture always enjoyable. Note that David Page's work shows the extra X chromosome on females is not totally inactivated. The Y chromosome is not totally for sex identification only. There are at least 13 genes from Y chromosome that are expressed in cells all over the body. For females, these 13 genes are expressed in the "inactive" X chromosome.
Thanks for naming Page. Will cross-reference him. I appreciate that!