Mitosis, Meiosis, And Patterns Of Inheritance Worksheet Page 15
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2714.
In cattle the horned conditions is recessive to the polled, or hornless. Many matings were made between
these two types from which the results were derived in phenotypic groups shown below: Give the
genotypes of the parents of each group. If there is more than one combination, show all combinations.
Parents’ Genotypes
A.
Group 1; all offspring with horns:
____________
B.
Group 2; all offspring without horns:
___________
C.
Group 3; a phenotypic ratio of 3 hornless to 1 horned:
___________
D.
Group 4; a phenotypic ratio of 2 hornless to 2 horned.
___________
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