My mother in law and father in law and sister in law and husband all have red hair, but neither of my kids do (which is a shame, I would have liked one of them to carry the ginger gene on)
I was always told that genetic hair colourings went in order of strength of Black > Brown > Blonde > Red.
So if a somebody had red hair they must have 2 red chromosomes otherwise if they had a blonde, brown, or black chromosome then that colour would override the red.
Therefore if there is a grandparent on both sides with red hair then a red gene has to have been passed down on both sides. So the highest likelihood is the husband will have a Blonde+Red chromosome and the wife will have a Brown+Red chromosome. So the possible combinations would be a Brown+Blonde = Brown, Brown+Red = Brown , Blonde+Red= Blonde or Red+Red=Red. So 25% in this case
Not necessarily. There is still a 25% chance for both grandparents to have the gene. The grandparent has a 25% chance of having two dominant genes.
I was always told that genetic hair colourings went in order of strength of Black > Brown > Blonde > Red.
So if a somebody had red hair they must have 2 red chromosomes otherwise if they had a blonde, brown, or black chromosome then that colour would override the red.
Therefore if there is a grandparent on both sides with red hair then a red gene has to have been passed down on both sides. So the highest likelihood is the husband will have a Blonde+Red chromosome and the wife will have a Brown+Red chromosome. So the possible combinations would be a Brown+Blonde = Brown, Brown+Red = Brown , Blonde+Red= Blonde or Red+Red=Red. So 25% in this case
I thought Red was an incomplete dominant which means it doesn't get knocked out of the running by a dominant, like a recessive (like blonde) would but rather blend with the dominants and recessive and incomplete dominants, so with a brown dominant and red incomplete dominant you get auburn, with a blonde recessive and red incomplete dominant you get strawberry blonde.
I thought Red was an incomplete dominant which means it doesn't get knocked out of the running by a dominant, like a recessive (like blonde) would but rather blend with the dominants and recessive and incomplete dominants, so with a brown dominant and red incomplete dominant you get auburn, with a blonde recessive and red incomplete dominant you get strawberry blonde.
Well my science teacher didn't go that in depth when he taught me this but if he taught me incorrect things I won't be happy!
Comments
Don't worry, it wasn't funny so you're not missing anything
Not necessarily. There is still a 25% chance for both grandparents to have the gene. The grandparent has a 25% chance of having two dominant genes.
I thought Red was an incomplete dominant which means it doesn't get knocked out of the running by a dominant, like a recessive (like blonde) would but rather blend with the dominants and recessive and incomplete dominants, so with a brown dominant and red incomplete dominant you get auburn, with a blonde recessive and red incomplete dominant you get strawberry blonde.
Well my science teacher didn't go that in depth when he taught me this
I could be wrong - I just remember reading it somewhere
But I am sure the teacher taught you what was true of the day, science is always changing
I thought it was funny.
Yeah I noticed you did. Not to worry maybe one day if you wish real hard you will develop a better sense of humour