A geneticist from an alien planet that prohibits genetic research brought with him two true-breeding lines of frogs. One frog line croaks by uttering “rib-it rib-it” and has purple eyes. The other frog line croaks by muttering “knee-deep knee-deep” and has green eyes. He mated the two frog lines, producing F1 frogs that were all utterers with blue eyes. A large F2 generation then yielded the following ratios: (a) How many total gene pairs are involved in the inheritance of both eye color and croaking? (b) Of these, how many control eye color, and how many con- trol croaking? (c) Assign gene symbols for all phenotypes, and indicate the genotypes of the P1, F1, and F2 frogs. (d) After many years, the frog geneticist isolated true-breeding lines of all six F2 phenotypes. Indicate the F1 and F2 phenotypic ratios of a cross between a blue, mutterer and a purple, utterer
A geneticist from an alien planet that prohibits genetic research brought with him two true-breeding lines of frogs. One frog line croaks by uttering “rib-it rib-it” and has purple eyes. The other frog line croaks by muttering “knee-deep knee-deep” and has green eyes. He mated the two frog lines, producing F1 frogs that were all utterers with blue eyes. A large F2 generation then yielded the following ratios:
(a) How many total gene pairs are involved in the inheritance of both eye color and croaking?
(b) Of these, how many control eye color, and how many con- trol croaking?
(c) Assign gene symbols for all
(d) After many years, the frog geneticist isolated true-breeding lines of all six F2 phenotypes. Indicate the F1 and F2 phenotypic ratios of a cross between a blue, mutterer and a purple, utterer.
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