What colour eyes would a father with brown eyes and a mother with hazel eyes produce?

The mother and 4 siblings of the mother have blue eyes, the father and 2 siblings have brown eyes. The father's father has brown eyes and the mother blue. His siblings are 2 blue eyes and 1 brown eyes.

Both parents would have inherited a recessive gene for blue eyes from their respective mothers (since their mothers both have blue eyes they must be homozygous BlBl genotype) in addition to the dominant one for brown in the father and one for hazel in the mother.
Both parents are both said to be heterozygous - BrBl and HzBl. Therefore their predicted offfspring would have the following geneotypes BrHz, BrBl, BlHz and BlBl.
Therefore any child would have a 2 in 4 chance of having brown eyes (BrHz and BrBl genotypes), a 1 in 4 chance of having Hazel eyes (hazel being dominant to blue, HzBl genotype) and a 1 in 4 chance of having blue eyes (BlBl genotype). Of course these are theoretical probabilites, in nature things are rarely so predictable.

The offspring could have any eye color in the gene pool,going back many generations.
(ps--Brown is supposed to be the dominant gene,HOWEVER,I have green eyes,my ex-husband has dark brown eyes--we have 4 children...2 with brown eyes,1 with green eyes,and 1 with blue eyes!You never know what will win in the gene lottery;-)

 

Hi, these traits in genes can go back generations, and re-occur at any time within offspring.
My sons' eyes are blue, mother has brown eyes, and mine are green.
So there is no telling.
I quite like my green eyes, but have not passed that on.
Maybe my great-great grandfather had green eyes

 

Any of them. My husband has brown eyes and I have hazel. 2 son's have blue eyes and one has brown. The blue comes from my sister. My son with the brown eyes was actually born with them that colour they never changed. the two with blue were born with dark blue but changed to a much lighter blue.