Are all traits inherited being dominant to another trait?

Answer 1

nope.

There's regular dominant and recessive (or what geneticists call Simple Mendelian) A(dominant)a(recessive) Aa
example: if a heterozyous (Aa) male mates with a heterozygous female for tongue rolling, then 75% of the children will be able to roll their tongues (25% AA, 50% Aa) and 25% will not.

There's partial dominance. An example would be the color of carnations: if a red carnation is crossed with a white carnation, they can have pink offspring.

There's co - dominance, which is rare. The best example is blood type. If an AA type is crossed with a BB type then all their offspring will be AB. It's not like dominance where only one trait shows up, or like partial dominance where the traits "mix". Both the A factor and the B factor are present in the cells and function independently of each other.

There are other types of dominance between different genes, but theyre too difficult to explain in this forum.

Answer 2

No.
There are traits that are incompletely dominant to each other as well as co dominant to each other.

In regular (complete) dominance, the heterozygote has the DOMINANT parental pehnotype.
For example, cross a green GG pea plant with a yellow gg pea plant and all the offspring are green Gg

In incomplete dominance, the heterozygote has NEITHER parental phenotype.
FOr example, cross a red snap dragon RR with a white snap dragon R'R' and the heterozygotes are pink RR', a color that is NOT red and NOT white.
Few humans traits are inherited this way.

In COdominance, the heterozygote has BOTH parental phenotypes.
For example, cross a person homozygous for type A blood AA with a person homozygous for type B blood BB and the heterozygote has type AB blood. AB

So there are cases of traits that are NOT dominant to another trait.

Answer 3

Brown hair and eyes are dominant to blue eyes and blond hair. I have blond hair and blue eyes, and my ex-wife has brown hair and brown eyes, both of our kids have blue eyes and blond hair though. BUT-the fact of dominant genes STILL prevail, my children just inherited the recessive trait from their mother as well as the traits that i have. As ALL studies show, outside of any alteration of genes by us as people in the future (or mutants if we allow it)...heh heh Dominant traits will ALWAYS prevail in the LONG run...and so, in one study I read, eventually, without ANY outside interference, not only will, in a VERY long time from now, we all have dark hair and eyes, women will not have breasts!!!!! They will still have the 33 mammary glands in each breast, that ALL normal women have, but time will shrink them to very small proportions. So, if I am reading your question correctly, NO, Traits are predestined as to the way they have been formatted already....and although we can breed dogs, plants, and other things to BRING OUT certain traits we desire, nature will always bring the original diminant traits back to light and sequence. Hopefully DNA formatting can rid us of dreadful traits though, and i believe this will come to fruition in time also.

Answer 4

No. You can inherit two dominants or two recessives and some traits (like skin color) mix.

Answer 5

no.. traits that are passed on can be dominant or recessive.. those traits that are prominent to the offspring (from the parent) are called dominant.. if otherwise, it's of course, recessive..

Answer 6

Not sure, but I don't think so although it would make more sense it it were true. My daughter has blue eyes but my husband and I don't. My father does, but it doesn't seem likely that it would be dominate that the only person with blue eyes passed them down.