Latias is a legendary pokemon, so you cant get an egg from either latias or latios, even though they have genders.
Yes, Mewtwo, Latios and Latias will be in HeartGold and SoulSilver.
Latias is not available in SoulSilver
You can find Latias in Soulsilver throughout the Kanto region.
No, neither Latias nor Latios are breedable.
you can't, but you can catch latios in ss and latias in hg hg(Heartgold) ss(Soulsilver)
latias dosent evolve cus its a legendary Pokemon
in soul silver you get latios but you'll have to trade with some one who has heart gold to get a latias.
If you're asking if you can get an egg for Latios or Latias without breeding them, then the answer is no; you cannot get an Egg for either of them without hacking the game.
no
No
The cool legendaries you can get in Soulsilver/heartgold are the following: Lugia, Ho-oh, Raikou, Entei, Suicune, Articuno, Moltres, Zapdos, Mewtwo, Latias, Latios (Latios in Soulsilver & Latias in Heartgold), Kyogre, Groudon, Rayquaza (Kyogre in Heartgold, Groudon in Soulsilver & Rayquaza if you have both).
you have to get into kanto first than once you get the magnet train pass there should be a guy that will give you a device that will show you where latias is.