PROCESS
These are all the Exercises you have to solve and send to the Class Group Paddlet.
EXERCISE 1
Define and discuss the differences between the following terms:
a) Hemizygous
b) Homozygous
c) Heterozygous
EXERCISE 2
The Hemophilia and the Russian Revolution of 1917.
Few diseases have had as much impact on human history as hemophilia. ¿Was this particular disease an ally of Rasputin?
a) What is hemophilia disease?
b) Which is the kind of inheritance? Describe accurately the consequences of this kind of inheritance depending on the sex of the individuals.
Moreover, not all forms of hemophilia are equally serious. If the lack of factors is not complete can be unnoticed until adulthood and just appear in particular circumstances (e.g surgical intervention). Now, Imagine the significance of this in the case of marriages between members of different monarchies in the case of the gene present in both family lines.
c) Where does the greatest known hemophilia focus in history come from?
Regarding the fact of how this illness reaches Russia, we must know that Princess Alicia, had 7 sons, one of whom, Frederick was hemophiliac and two daughters, Alix and Irene, carriers.
d) Complete the scheme.
e) Write the genotype of Alicia, Frederick, Alix and Irene for the hemophilia character.
Frederick died when he was three because the fell out of an open window. However, Alix became a Tsarina of Russia when she married Nicholas II in 1894 and took the name of Alejandra Feodorovna. His son, Alexis was hemophiliac and had a terrible childhood. He suffered severe bleeding and came several times on the verge of death. This means a serious political problem because this kid was the heir and they were closer to Revolution and the First World War.
f) Which was the role of Rasputin in this whole story?
g) Do you think that history could have been different without his intervention?
EXERCISE 3
Answer the following questions:
a) Explain how Morgan's experience with flyes is an example to justify the sex-linked inheritance.
EXERCISE 4
Which kind of inheritance corresponds with each genealogical tree? Write the genotype of each individual.
1)
2) 
3)
EXERCISE 5
In the case of mammals, females carry XX chromosomes and male XY, but it does not happen in other species.
You have to look for examples of other living beings that have different sex inheritance patterns.
EXERCISE 6
Some places in Africa are very dangerous for albino people. The natives consider albinism as a curse and kill albinos to use their organs for black magic.
a) Looking for information about this situation. Which is the reason for this terrible superstition?
b) How would you try to convince those people of their mistake?