So, round and wrinkled, yellow and green, purple and white, all move separately from each other.
Well, this is because they were indeed on separate chromosomes and so we have very nice pattern that results
but the point is he was able to come to the principle of independent assortment.
So, from the model hybrid cross, we got segregation.
The principle of independent assortment is saying, "Yes. Segregation happens
but each trait does so independently of the other trait."
So, the principle of independent assortment states that,
in our language of meiosis and chromosomes, during meiosis I,
chromosome alignment is random on the metaphase plate
such that these chromosomes can segregate from each other, independently of other factors.
So, when we do take a look at meiosis,
we can see that it's this random alignment of chromosome pairs on the metaphases plate of meiosis I
that really support Mendel's principle of independent assortment.
Again, each pair segregates from each other independently of the next pair
because they align randomly on the metaphase plate where we can have all the blue ones on one side,
all the red ones on the other side or some shuffling of that same layout
where we're just having two separate from each other.
In closing the first lecture introducing us to genetics and exploration of Mendel,
you should now be able to describe what we knew before Mendel
as well as evaluate the outcomes of mono and dihybrid crosses.
We should be able to relate these to movement of chromosomes during meiosis as well as differentiate
between the principle of segregation and the principle of independent assortment.
Thank you so much for listening.
I look forward to seeing you in the next lecture.