Q. Heterozygous tall and violet flower garden pea plants were selfed, and total $\text{1200}$ plants are collected. What will be the total number of plants with first dominant and second recessive traits?

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Solution:

In dihybrid cross in $\text{F2}$ generation, out of $\text{16}$ plants, three will be with first dominant and second recessive; therefore, the number of such plants will be $\left(3 / 16 \, \right)\text{\times }\text{ 1200 = 225}$ .