If father and mother have brown eyes hair can baby blonde blue eyes?

It is possible for a baby to have blonde hair and blue eyes even if both parents have brown eyes and hair. This is because eye colour and hair colour are determined by multiple genes, and it is possible for a child to inherit different alleles from each parent.

For example, the genes for brown eyes are dominant, meaning that only one copy of the gene is needed to produce brown eyes. However, the genes for blue eyes are recessive, meaning that two copies of the gene are needed to produce blue eyes. If a parent has one copy of the gene for brown eyes and one copy of the gene for blue eyes, they will have brown eyes, but they will still be able to pass on the gene for blue eyes to their children.

Similarly, the genes for blonde hair are recessive, meaning that two copies of the gene are needed to produce blonde hair. If a parent has one copy of the gene for blonde hair and one copy of the gene for brown hair, they will have brown hair, but they will still be able to pass on the gene for blonde hair to their children.

Therefore, if a father and mother both have brown eyes and hair, it is still possible for them to have a child with blonde hair and blue eyes if they both carry the recessive genes for these traits.