Eye color, Hair color, Blood types, and Other Traits
21 - 30 of 119 Answers
June 17, 2014:
I have red hair and when got my wisdom teeth removed, my father told me that they had to use more than the regular amount of anesthetics usually needed. At first, I thought nothing of it. Then, when I later started a research paper on red hair, I found out that people with red hair generally need around 20% more anesthetics than people with other hair colors. Why is that? Is it because my MC1R gene is mutated, or is it something else completely.
April 16, 2014:
Is the ability to wiggle your ears genetic? How is it passed on?
March 6, 2014:
I have been wondering this for a while since I've seen it pop up on various websites and forums…will red hair eventually go extinct? I honestly don't believe it will because it is recessive from what I know, and recessive genes don't up and disappear.
October 24, 2013:
Can twins have two different blood types if they have the same father?
August 14, 2013:
Do we know how the blue eye gene causes blue eyes?
August 9, 2013:
Is everyone with blue eyes related? How was that trait passed on?
July 24, 2013:
Could you please explain if it is possible for a father who has O positive blood and a mother with A positive blood to have a baby with O negative blood? I am a little confused and have been trying to research the answer. I would appreciate if you are able to assist.
July 9, 2013:
Did Rh- blood come from Neanderthals? I have seen postings on the web that say that it entered human DNA around 35,000 years ago and that seems about right for coming from Neanderthals.
July 2, 2013:
Is a person “born gay”, or is being gay a learned behavior?
May 22, 2013:
I have a question about the possibility of there being an eye color gene on the Y chromosome. In my family, my paternal grandfather had a very distinct shade of blue eyes. My father, brother and nephew (brother’s son) all have blue eyes. Only the males in our family have blue eyes. My mother and sister-in-law have green eyes. When you look at the four generations of males it seems like the blue eyes have only been passed father to son.