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Originally Posted by bugmenot
It seems that in humans the females genes seem to be the ones passed on to offspring more than the males while in other mammals the males genes are the dominant ones like horses, dogs. Is that true?
Would human breeding be possible in order to get the best possible offspring even though the human species is more complex than any other species?
If a male carries a certain trait and the females does or does not carry the same trait will the males trait pass on to the offspring? It seems to me that the females genes make the final decision on that.
How would someone know if a trait will get passed on or not?
It also appears to me that human females evolve faster than males as far as I could tell from physical attributes. Is that true?
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First off I would recomend some studying of basic genetics. You first statement is simply unfounded. You have dominant and recessive alleles. Traits (phenotypes) are expressed through a variety of ways.
1. Complete dominance- the dominant gene (usually represented by a uppercase letter) is the trait expressed.
2. Incomplete dominance- The hybrid (Aa) shows a blend of both traits. EX. red cross w/ white...some are pink.
3.Codominance- Both traits are expressed. (AB blood tyoe).
4. Mutiple allel control- a number of alleles control a single trait. EX eye color is controled by six sets of allels.
5 Sex linked trait- A trait that is cariied on either the X or Y chomosome. If it is carried on the Y chomosome only males will exhibit this trait. Traits on the X chomosome are suppled by the mother in all males. So what ever traits are carried on the x chomosome in the male are expressed.
Sex determination can vary greatly. Some can be temp. dependent (somr corcs and reptiles) others are controlled by the ploidy (number of sts of chomosomes..in many insects if I recall) and some are controlled by the female.
I think it would be streaching it greatly to consider humans the most complex organisms.
Individuals do not evolve species as a whole do, so one sex cannot evolve faster than another.
