I learned more with your video than with my teacher! And english is not even my native language. Thank you so much!

During egg development, meiosis is blocked at prophase I until ovulation. Most instances of nondisjunction maternal occur during prophase I not during meiosis II as noted in the video. Meiosis II occurs following fertilization. Therefore, it occurs right before conception not during embryogenesis.

The second issue is picture of the translocation. Non-classical Down syndrome is associated with a Robertsonian translocation not a reciprocal translocation as illustrated in the figure.  Chromosome 14 and 21 are acrocentric chromosomes meaning that they have very tiny short arms.  The short arms are both lost in a reciprocal translocation and both long arms are connected by the “new” centromere.  

While these changes are unlikely to impact most people’s understanding of the topics, they could cause problems for some going into selected medical professions.

Thank you!

if only all the teachers had that passion that you have for teaching all students would succeed. thank you!!

You explain very well

Seriously, this is the video I needed , very in-depth clarity . Thanks for this❤

Thank you. I can’t skip one of your video without putting like at the end.  As always Informative and to the point 👍🏼👍🏼

Amazing, Thank you. I don't know how you do it but it just clicks when you explain it.

Thank you for your explanations. You explained this concept very well!

I could listen to you all day!

I learn something more today, which I  was barely known about yesterday. thank you.

You're a freaking teacher superhero!

I really loved this video! I too post videos in support of our Down Syndrome toddler only to spread awareness, cause when we discovered we were blessed with a trisomy21 child we were clueless on expectations and who or where to turn to for guidance and support.  I subscribed to your channel to demonstrate support.  Great Video!

have been reading the whole time trying to understand the concept but didn't really, but thank you for this video. I really understood the concept.

Thankyou.

THANKYOUUUUUU IT REALLY HELPS U R SO PROFESSIONAL AT EXPLAINING STUFF

Easy to understand. Thank you 😊

Thnks sir .....nice  presentation esp on translocation

you tied it all together !

Thank you very much for this video. I've been trying to clearly understand this concept for a couple of days now, and you tied it together very well!

I don't like how this guy speaks at all, but pretty decent video