Are hereditary genetic charecteristics passed down thru Y chromosome from generation to generation ?

Question

Does it mean a female XX does not have any charectristics passed down from ancestors ?

If a couple have only female children how is their genetic identity preserved ?

Does the Y choromosome contain only paternal charecterisitcs or does it contain maternal ancestral charectristics also ?

Can two XX chromosomes be fused together without sex with a man ? i.e can woman have children from the XX chromosomes taken from another female ?

Answer 1

The characteristics on the Y chromosome are passed down from fathers only. The others come from the mother or the father. Look at bi-racial children. They look like a blend of their mother and father. Or, if you want to look closer, every blue-eyed child of a brown-eyed father and blue-eyed mother is carrying Mom's gene for eye color.

> If a couple have only female children how is their genetic identity preserved ?
In the other chromosone pairs.

> Does the Y choromosome contain only paternal charecterisitcs or does it contain maternal ancestral charectristics also ?
Only paternal, although it mutates very slowly. I had my DNA tested for genealogy. Another male PACK and I who share the same 5th great grandfather matched on 34 out of 37 points. If the Y hadn't mutated, we would have matched on 37 out of 37.

> Can two XX chromosomes be fused together without sex with a man ?
Probably, but you'd have to be a scientists working in a cloning laboratory to do it, and I suspect you'd need to be working in 2107, not 2007.

Answer 2

OK, basic conception works like this father contributes an X or Y chromosome which determines baby's sex. If he passes on an X chromosome then baby is a girl w/all her paternal daddy's traits from his side of the family, same as if dad passes on a Y to make a boy. Both parents contribute the DNA/RNA of their ancestors.
Old research lab once claimed to take two x chromosomes and produce a female infant, urban myth, no live infant ever born. So far cloning has been a natural disaster as well, even in animals.

Answer 3

Relatively few traits are known to be passed down. They would be passed down to male children only. But remember, a male gives the genetic complement of his 22 other chromosomes to all his children, whether they be male or female. These traits are passed down although they are diluted by about half with each succeeding generation. Mitochondrial DNA exists only in females.

As far as we know, only male characteristics are passed on the Y chromosome. Some animal eggs can develop into embryos without male fertilization. This is theoretically possible in humans, but there are serious ethical questions.

One genetic trait on the Y chromosome is hair growing on the helix of the ear. An affected father transmits it to all his sons.

Less scientifically accepted are:
1) Channel surfing (SRF)
2) Inability to put the toilet seat down (BIDET)
3) Inability to ask directions (LST)
4) Finding humor in bodily noises (BLCH)
5) Selective hearing loss (MUM)
6) Air guitar (sometimes expressed as air violin in older males) (STRM)