| ORIGINAL BOOK REVIEW by Dr. Rainer R. Erhardt "Well, there is help on the horizon and anyone seriously interested in color genetics should take a look at Linda Rubin's book: COCKATIEL GENETICS MADE EASY! Though this book is primarily directed to breeders of cockatiel mutations, there is enough information in thisvolume to teach anyone the secrets of dealing with recessive, sex-linked, and dominant mutations..." ACBM, Vol. 65, No.12 CLICK TO READ THE REST OF THE REVIEW !112 pages, 15 chapters, glossary & more! |
Copyright 2006 Linda S. Rubin
| Multiple Bird Households by Linda S. Rubin |
| Series by Linda S. Rubin |
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| Producing Mutations From Normal Grey Splits Copyright © 2004-2006 by LINDA S. RUBIN CF Genetics Consultant/Panel Judge www,CockatielsPlusParrots.com Selected Q&A's "From My Mailbox" Q. I have a Cinnamon hen split to Whiteface and Pied that I mated to a Normal Grey cock. I’m not sure if the Normal Grey is split to another mutation. Will the hen produce Normal Greys split to Cinnamon, Whiteface, or Pied? Or will any of the chicks be visible for one or more of these mutations? A. Unless the sire is split to other color mutations - which is most likely because few Normal Greys today are pure homozygous Normals that do not carry other mutations - then your expectations will most likely be correct. However, only test-breeding will reveal which colors your Normal Grey male may be carrying. Meanwhile, we can only go by the facts we know so far. Because the hen is visually a sex-linked Cinnamon, we know that she passes the sex- linked color onto her sons in split form and her daughters will remain unaffected. Sex-linked mutations are passed down to the opposite sex gender. We can therefore expect male offspring that will carry Cinnamon. Both Whiteface and Pied are recessive mutations and although these traits will be passed on to some of the offspring, we would require the cock to also carry Whiteface and/or Pied to produce any visual Whiteface or Pied mutations. Again, only test-breeding will demonstrate which traits the cock bird might be carrying. Charting your pair with what you have provided yields the following offspring: Normal Grey cock x Cinnamon/Whiteface and Pied hen = cocks: 25% Normal Grey/Whiteface Cinnamon 25% Normal Grey/Cinnamon Pied hens: 25% Normal Grey/Whiteface 25% Normal Grey/Pied where the diagonal (/) symbol means "split to" (or heterozygous) to the color(s) following it. If other color mutations pop up in the nest, then it is likely that the male is carrying these mutations in the hidden (split) state. |
| PRODUCING MUTATIONS FROM NORMAL SPLITS Copyright © 2004-2006 Linda S. Rubin All Rights Reserved |
