Here you will find forums where you can post any questions you might have regarding the IMAT or studying medicine in Italy. We encourage you to post questions and discuss with each other. If you have an answer to someone’s questions, post it!
This forum is open to everyone. If you are not a paying customer you can still sign up for the forum for free. Simply register a user account below. We encourage everyone applying to the IMAT this year to sign up!
Note: We monitor this forum and every comment before it is made public, this is to ensure that no bot material, spam or other inappropriate content is posted to the forum. Before posting, make sure you have read and agree to our forum rules.
Note: You can update your display name for your Profile: My Profile > Account
In the question it is asked how many recombinant daughter chromosomes and genetically distinct daughter chromosomes are present after Meiosis. I picked answer C (row 5), since 4 daughter chromosomes are obviously correct, but since those 4 originate from recombinant chromosomes, I thought that they are also all recombinant.
Is the answer in the diagram? So do only the right chromatid of the left chromosome (abd) and the left of the right chromosome (ABD) cross over, and so there are only 2 recombinant chromatids/daughter chromosomes? So in this case the recombinant chromosomes would be aBD and Abd (crossing over site between Aa and Bb/Dd parts)?
And if yes, are there cases in which all 4 chromatids are crossing over / are recombinant after Meiosis?
Thanks in advance!
A recombinant chromosome specifically means a chromosome that has received DNA from the other homolog through crossing over. Simply being produced by meiosis does not make it recombinant.
There are 4 daughter chromosomes in total at the end of meiosis, these are ABD, abd, Abd, and aBD.
But only 2 are recombinant, these are Abd and aBD.