Which phenotypes are recessive and dominant?

Question

Some phenotypes (physical traits) are recessive (like blue eyes) and dominant. That you know of, which are recessive and which are dominant? I'm curious. :-)

Answer 1

If a genetic trait is recessive, a person nees to inherit two copies of the gene for the trait to be expressed. Both parents have to be carriers of a recessive trait in order for a child to show the recessive trait.

From"autosomal dominate" Wikipedia:
An autosomal dominant gene is one that occurs on an autosomal (non-sex determining) chromosome.
As it is dominant, the phenotype it give will be expressed even if the gene is heterozygous.

Answer 2

Blue and green eyes are recessive. The darker the hair, the more dominent it is over blonde, a recessive gene. Curly hair and Straight hair have an incomplete dominance. CC will make curly, but CS will create wavy hair, so neither has dominance over the other.

There's always at least four possible results with the genes, and the recessive trait should appear 25 percent of the time.

Hope this helps!

Answer 3

Blue eyes are recessive, although genetics is quite a crazy thing. When you have certain alleles switching on, crossing over and all kinds of gene pool mixers it makes it hard to tell which will be expressed. Sickle cell is a homozygous recessive which means to express that sickle cell phenotype you will need two recessive genes. Dark hair is usually dominant, but with lighter colored alleles you can have all different types of hair colors. Look around on the net because it would take years for me to type all of them down.

No, the dominant gene is not the one expressed. If you are blue eyed you are most likely homozygous recessive for the blue eyed gene. A brown eyed person can be homozygous dominant, or heterozygous which mean they have both the dominant and recessive genes.

Answer 4

recessive phenotype, for example blue eyes, is only expressed if both the alleles that make up the pair of genes for eye colour are recessive. Even if one of the two alleles is dominant, the phenotype will be dominant.
Therefore, the determination of what is recessive and what is dominant is understood only at the genetic level. In other words, the genotype determines the phenotype.

Answer 5

The one that shows up is dominant and the one that doesnt show up is recessive. In other words, if you see someone with blue eyes, you can safely assume that they have a dominant allele for blue eyes but recessive allele for X(red, green, etc) colored eyes

Answer 6

Darker in appearance is dominant.
If I have brown eyes, I could also carry a blue eye gene--which means if I have a child by a brown eyed male and he also has a blue recessive, and those happen to be pulled by the fetus, then blue will be the result, however if I have brown eyes dominant (brown and brown pulled from mom and dad) and my brown eyed boy has blue (brown and blue gene carrier) my child will be brown eyed...brown x's 3 vs 1 blue.
Flip side, I have blue eyes and blue carrier, I marry brown eyes with blue carrier, baby=blue eyes. 3 blue vs 1 brown....make sense?

Answer 7

I think it depends on the genes. If the parent has a dominant gene (labeled, say, B for brown hair) and a recessive gene (labeled, say, b for blonde)... then the child will have the brown hair... Maybe I'm misunderstanding your question.. I don't know

Answer 8

The visible trait is the dominant trait. While the hidden trait is the recessive trait.

Answer 9

These are the ones I got from my Biology book:
a) curly hair (dominant), straight hair (recessive)
b) left handed (d), right handed (r)
c) Rhesus positive (d), Rhesus negative (r)
d) Brown eyes (d), blue eyes (r)
e) dark skinned (d), fair skinned(r)
f) Short(d), tall (r)
g) dark colored hair (d), light colored hair(r)

That's the only ones. I hope this helps. :)