Color-blindness is a x-linked recessive gene disease. under what circumstances will this condition manifest in a child

This will occur if both genes from both parents are the x-linked recessive gene. this is due to the fact if the child had a dominant gene it would hide the recessive gene.

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.