White (w) coat color in guinea pigs is recessive to black (W). In 1909, W. E. Castle and J. C. Phillips transplanted an ovary from a black guinea pig into a white female whose ovaries had been removed. They then mated this white female with a white male. All the offspring from the mating were black (W. E. Castle and J. C. Phillips. 1909. Science 30:312–313). a. Explain the results of this cross. b. Give the genotype of the offspring of this cross. c. What, if anything, does this experiment indicate about the validity of the pangenesis and the germ-plasm theories
White (w) coat color in guinea pigs is recessive to black (W). In 1909, W. E. Castle and J. C. Phillips transplanted an ovary from a black guinea pig into a white female whose ovaries had been removed. They then mated this white female with a white male. All the offspring from the mating were black (W. E. Castle and J. C. Phillips. 1909. Science 30:312–313). a. Explain the results of this cross. b. Give the genotype of the offspring of this cross. c. What, if anything, does this experiment indicate about the validity of the pangenesis and the germ-plasm theories
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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White (w) coat color in guinea pigs is recessive to black (W). In 1909,
W. E. Castle and J. C. Phillips transplanted an ovary from a black
guinea pig into a white female whose ovaries had been removed. They
then mated this white female with a white male. All the offspring from
the mating were black (W. E. Castle and J. C. Phillips. 1909. Science
30:312–313). a. Explain the results of this cross.
b. Give the genotype of the offspring of this cross.
c. What, if anything, does this experiment indicate about the validity of
the pangenesis and the germ-plasm theories
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