The frizzle fowl is much admired by poultry fanciers. Itgets its name from the unusual way that its featherscurl up, giving the impression that it has been (in thememorable words of animal geneticist F. B. Hutt)“pulled backwards through a knothole.” Unfortunately,frizzle fowl do not breed true: when two frizzles are intercrossed, they always produce 50 percent frizzles,25 percent normal, and 25 percent with peculiar woollyfeathers that soon fall out, leaving the birds naked.a. Give a genetic explanation for these results, showinggenotypes of all phenotypes, and provide a statement ofhow your explanation works.b. If you wanted to mass-produce frizzle fowl for sale,which types would be best to use as a breeding pair?
The frizzle fowl is much admired by poultry fanciers. Itgets its name from the unusual way that its featherscurl up, giving the impression that it has been (in thememorable words of animal geneticist F. B. Hutt)“pulled backwards through a knothole.” Unfortunately,frizzle fowl do not breed true: when two frizzles are intercrossed, they always produce 50 percent frizzles,25 percent normal, and 25 percent with peculiar woollyfeathers that soon fall out, leaving the birds naked.a. Give a genetic explanation for these results, showinggenotypes of all phenotypes, and provide a statement ofhow your explanation works.b. If you wanted to mass-produce frizzle fowl for sale,which types would be best to use as a breeding pair?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The frizzle fowl is much admired by poultry fanciers. It
gets its name from the unusual way that its feathers
curl up, giving the impression that it has been (in the
memorable words of animal geneticist F. B. Hutt)
“pulled backwards through a knothole.” Unfortunately,
frizzle fowl do not breed true: when two frizzles are intercrossed, they always produce 50 percent frizzles,
25 percent normal, and 25 percent with peculiar woolly
feathers that soon fall out, leaving the birds naked.
a. Give a genetic explanation for these results, showing
genotypes of all
how your explanation works.
b. If you wanted to mass-produce frizzle fowl for sale,
which types would be best to use as a breeding pair?
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