no brown hair and brown eyes
Yes!
yes he would marry a Irish girl with brown haairband blue eyes
There's a 50% of chance that the children's eyes will be brown.
Kittens are often born with blue eyes. They later change to brown.
50% of the cross would be brown eyes and 50% would be blue eyes
Yes, as long as one of their Grandparents/ Great Grandparents has blue eyes. If both pairs of Grandparents have brown eyes then it is VERY unlikely :)
yes
Yes, it is possible for a blue-eyed man and a brown-eyed woman to have a blue-eyed child. Eye color is determined by multiple genes, so the child could inherit the necessary combination from each parent to have blue eyes.
Deborah Sampson's favorite color is purple
green and brown
Blue eyes are a recessive trait. If at least one of the parents had a blue/hazel eyes with a mixture of blue and brown, then the couple's offspring could have brown eyes. If both parents had solid blue eyes, neither would have the dominant brown gene to pass to the baby, and it would have blue eyes, regardless of the grandmother's eye color.