4.
Watch the Gene Control video.
Discuss the following:
• Why did the German scientist
decide to study the fruit flies at the larval stage?
• How does the mother fly activate
the control genes?
• What is the role of control
genes?
Which of the
two species is closer to humans?
1.- Because she could see the complete development of the
organism and not the complete and final stage, as other studies before
2.- By using
chemichals at each of the edges of the egg. These chemicals cause a reaction in
the genes and indicate wich side is the head and which is the back.
3.- To switch on the rest of the genes. The
chemicals used actívate the control genes, which activate the rest of the genes
near it and so on, so they know which “role” they are playing in the
development of the organism.
- The zebrafish, because is has control genes and body plans closer to our own.
