Assertion (A): A cross between a red flower bearing plant and a white flower-bearing plant of Antirrhinum is a case of incomplete dominance.
Reason ( R): This type of cross produces all plants having pink flowers.a. Both assertion (A) and reason ( R) are true and reason ( R) is the correct explanation of assertion (A). b. Both assertion (A) and reason ( R) are true but reason ( R) is not the correct explanation of assertion (A). c. Assertion (A) is true but reason ( R) is false. d. Assertion (A) is false but reason ( R) is true.

Sure, here are the step-by-step solutions: 1. The cross between a white-flowered and a red-flowered Antirrhinum plant results in offspring that have pink flowers. 2. This means that neither the white nor the red trait is completely dominant, but instead a blending of the two occurs. 3. The pink flowers of the offspring are the result of incomplete dominance, where neither allele is fully expressed and a new phenotype is produced. 4. In this case, the white allele and the red allele are both expressed to some extent, resulting in pink flowers. 5. This type of inheritance can be represented using a Punnett square, where the alleles for each parent are combined to show the possible genotypes and phenotypes of the offspring. 6. The Punnett square for this cross would show that 25% of the offspring have white flowers, 25% have red flowers, and 50% have pink flowers. 7. Understanding incomplete dominance is important for predicting the outcomes of genetic crosses and can help explain the diversity of traits observed in natural populations.