In another species of flowering plant, the tallness (T) trait is dominant over the dwarf condition (t), and red flowers (R) are dominant to white flowers (r). Suppose a plant heterozygous for both genes is crossed with an individual that is homozygous recessive for each trait. The cross produces a 1:1:1:1 phenotypic ratio. Are these two genes located on separate homologous pairs?

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    No, if the two genes were on separate chromosomes, then we would expect a 9:3:3:1 ratio.
    No, if the two genes were on separate chromosomes, then we would expect something other than a 1:1:1:1 phenotypic ratio.
    Yes, the cross TtRr x ttrr would give us an expected 1:1:1:1 phenotypic ratio if the genes assorted independently.
asked May 30, 2013 in Biology by anonymous
    

1 Answer

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Yes, the cross TtRr x ttrr would give us an expected 1:1:1:1 phenotypic ratio if the genes assorted independently.
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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