"apply the principles of mono hybrid inheritance and sex linkage to explain a pedigree"?

Sex linked inheritance.
u must know that ,male has the sign XY and female has the sign XX
lets take haemophelia ,which is heridetary bleeding desease when the gene is present on the X^h ,the male will be dead ,but for a female if XX is normal  ,X^hX is carrying the gene to her kids,and X^hX^h is dead female.
so if a male normal person is married to a carrier heamophelia gene Female what you expect their kids to be about the heamophelia desease.

                                                                       Male  X   Female
                                                                       XY     /        X^hX

                            Gametes                           ( X) ,   (Y )    /    ( X^h ).  ( X)

                                 First Filial Generation      X^hX , X^hY ,    XX , XY

                                                                     X^hX=carier female                                                
                                                                     X^hY=dead male

     so 1/4 of the F1 will be died ,because when the lethal gene h connects with chromosome X in the male ,this male is dead.
and 1/4 of the F1 will be heamophelia carrier females.

same happens with baldness in men and women ..etc  
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