Quote:
Originally Posted by
ryanzierke 
Quote:
Originally Posted by
Ducks and Banny hens I didn't get that information anywhere -- just genetic calculation. The Silky carries the duplex gene, so it's not easy to tell the difference between Rose and Walnut when the duplex just restricts it all into a ball or point. I always thought that silkies had Double Walnuts, but if not, just forget I said anything about Pea or Walnut in the list I made.
Are you sure the rooster doesn't have a Rosecomb, Muscovy?
Most Silkies do not have the duplex gene ether. I haven't seen many Silkies with cavernous nostrils.
Obviously, each bird can be different, but in my experience, most silkies that have not come from lines that have been recently crossed to birds with other types of combs are probably pure for rose comb, and most are also pure for pea comb as well. There is a difference in the appearance of a modified rose comb and a true walnut comb. The standard describes a true walnut comb, and that is what most breed towards.
Assuming that the bird is homozygous for both comb genes, all offspring when bred to a single combed bird will be walnut combed. BUT will only have one copy each of rose and pea. The next generation could yield a variety of comb types, depending on what the bird is bred to. This same scenario holds true for tjhe first generation offspring if the original bird has only one copy of each.
If the bird is pure for rose, but not pea, then half the offspring will have true walnut combs and the other hald will have modified rose combs. If the bird is pure for pea, but not rose, you will get about half walnut combs and about half pea combs (this scenario is possible, but not likely based upon experience).
