If you are a colour-blind male (Xc Y) and you have children with a carrier female (Xc X), what percentage of your children could be colourblind OR carriers? ***c means that chromosome has the colourblind gene***

Explanation:

Colour blindness is a common hereditary condition which is usually passed down from parents to offspring This is a X linked disorder

Given:

male   -  Xc Y (  color blind)

Female- Xc X ( carrier)

gametes, Xc, Y        *  Xc , X

F1  generation:  

Xc Xc,  Xc X,   Xc Y,   XY

So Xc Xc female and Xc Y male are colour blind because this disease is X- linked recessive disease,

and Xc X female is carrier,

XY male is normal.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.