Do blue and green eyes can make brown?

Answer 1

No. Blue eyes come from a recessive gene from each parent. The child must of 2 recessive gene pairs to have blue eyes (which is actually the lack of eye pigment). So a brown eyed parent and a green eyed parent may have a blue eyed child if both pass on a recessive blue eye gene, but if just one dominant brown or green eyed gene is passed along it will trump the recessive blue eyed gene and the child will have brown or green eyes.

Answer 2

Brown eyes are a result of higher concentrations of melanin in the iris, which is determined by genetics. Blue and green eyes cannot "make" brown eyes in the offspring unless there is a genetic mutation or other unexpected genetic influence. It is more likely for parents with blue or green eyes to have children with blue, green, or hazel eyes.

Answer 3

It is possible, but less likely than a brown-eyed result. The reasons for this are actually a little more complex than the simplified answer given here, but the summarised explanation is as follows.

Eye colour (together with most of our characteristics) is dictated by dominant and recessive genes. Brown is a dominant colour and blue is recessive, i.e. brown "wins" in a direct contest with blue. For two brown-eyed parents to create a blue-eyed offspring, they must BOTH be carrying the recessive blue-eyed gene.

If NEITHER or only ONE of them carries the recessive blue gene, there is no chance of a blue-eyed offspring, since the possible combinations would be:

Male parent - Female parent = Offspring

___ ___ ___

Brown - Brown = Brown

Brown - Blue = Brown

Blue - Brown = Brown

However, if BOTH parents are carrying the recessive blue gene, it is reasonably obvious that there is a 1 in 4 chance of a blue-eyed offspring, as follows:

Male parent - Female parent = Offspring

___ ___ ___

Brown - Brown = Brown

Brown - Blue = Brown

Blue - Brown = Brown

Blue - Blue = Blue

As I say, this is simplified and genetics works in a more complex way than this! Still, this is essentially the reason why two brown-eyed parents can have a blue-eyed offspring, but it is less likely than a brown-eyed one.

I hope this answers your question?

If the female dogs eyes are brown, and the male dogs eyes are brown, it is likely to make a puppy with brown eyes. Although it is possible for the puppy to have blue eyes if the parents ancestors had blue eyes.

Answer 4

Yes. Green eyes and blue eyes are caused by the same gene.

Brown eye gene = B

Blue eye gene = b

Each person has two copies of the eye color gene in their genome, one inherited from each parent. Now if both parents only carry the gene for brown eyes, BB and BB, then their child will receive one B from each parent, ending up as BB. The same works for blue eyes, if that's the only gene both parents carry, bb and bb. Each parents gives on b to the child, who ends up as bb.

If you have one parent who only has the gene for brown eyes, BB, and one parent who only has the gene for blue eyes, bb, then all the children will have brown eyes. Example: One parent gives a B, the other gives a b. Bb = brown eyes. Here's why: When you have two alleles (coding sequences) from genes that are at odds with each other, one version will override the the other. When dealing with eye color, B always dominates b. But these children now carry the b gene in them, and could pass it down to their own children. Some of them, depending on the other parent, could end up with blue eyes.

If one parent is Bb, and the other is bb, then each time they have a child, there is a 50% chance it will have blue eyes. Example: First parent is Bb, second parent is bb, then their children will end up as either Bb, bb, Bb, bb. If both parents carry the genes for brown eyes and blue eyes, then each time they have a child, there is a 25% chance it will have blue eyes. Example: First parent is Bb, second parent is Bb, then their children will end up as either BB, Bb, Bb, bb.

Answer 5

its possible but only if someone in a previous generation of your family has them.

Answer 6

If brown eyes run in the family, then yes.

Answer 7

Think about how you said that.I think you should of said "Does blue and green eyes make brown?". No,blue and green don't make brown.

Answer 8

yes they can, also brown and hazel Well, my father has green eyes, and my mother has blue eyes. My eyes are green. Both green and blue are recessive. So yes they can.

Answer 9

Generally, they make brown eyes. But, the genetics of eye color are more complex than realized previously. Almost any parent-child combination of eye colors can occur.

Answer 10

There's an article on wikipedia about the subject. It's too complicated to explain here.