Choose the correct answer from the alternatives given.
In tomatoes, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over dwarfness (t). A plant that is RrTT is crossed with a plant that is rrTt. What are the chances of an offspring being heterozygous for both traits?

None

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1/2

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1/4

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9/16

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Solution

The correct option is C 1/4
The resulting gametes from RrTT plant will be RT and rT and the gametes from rrTt plant will be rT and rt. Now, RrTT X rrTt plant will result in genotypes as shown. So, only one will be heterozygous for both traits and therefore the probability will be 1/4. So, the correct option is '1/4'.

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Choose the correct answer from the alternatives given.In tomatoes, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over dwarfness (t). A plant that is RrTT is crossed with a plant that is rrTt. What are the chances of an offspring being heterozygous for both traits?

Choose the correct answer from the alternatives given.
In tomatoes, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over dwarfness (t). A plant that is RrTT is crossed with a plant that is rrTt. What are the chances of an offspring being heterozygous for both traits?