00:01
So the early development of embryo including the anterior posterior body plant structure development of the embryo is done by the three genes.
00:24
So the first gene is the maternal effect genes.
00:31
The second type of genes are the segmentation genes and the third type of it.
00:42
Are the homeotic genes.
00:48
Now under segmentation genes again there are three types of other genes.
00:54
So the first one under segmentation gene is the gaap genes.
01:01
Then under that we have the pair rule genes and the last one are the segment polarity genes.
01:26
Now the zygotic genes are the zygotic genes.
01:30
Are the segmentation genes, more specifically the gap genes.
01:45
So this is because under the maternal effect genes, the body develops due to the embryo develops due to the genes or the mrna of the mother.
02:00
But on the other hand, when the zygotic genes appear or start, expressing themselves in the embryo.
02:11
So the first zygotic genes which are expressed in the embryo are the segmentation genes which are responsible for determining the various segments of the embryo development...