Mendel did two experiments: (1) Pollen from tall plants was taken to fertilise ovules of short plants, and (2) pollen from short plants was taken to fertilise ovules of tall plants. If we compare the plants produced from these two experiments, we will see that ________.

Correct option is B

Correct Answer: (B) Experiment 1 will produce tall plants and experiment 2 will also produce tall plants.

Explanation:

Mendel's experiments involved crossing pea plants with different traits to understand inheritance patterns. Let's break down the two experiments:

1. Experiment 1: Pollen from tall plants fertilizes ovules of short plants.
• Tall plants are dominant (T), and short plants are recessive (t).
• The cross would be between Tt (tall) and tt (short).
• All offspring (F1 generation) will inherit one dominant allele (T) and one recessive allele (t), resulting in a Tt genotype.
• Since the T allele is dominant, all F1 plants will be tall.
2. Experiment 2: Pollen from short plants fertilizes ovules of tall plants.
• The cross would be between Tt (tall) and tt (short).
• The offspring will inherit one dominant allele (T) from the tall parent and one recessive allele (t) from the short parent, resulting in a Tt genotype.
• Again, since the T allele is dominant, all F1 plants will be tall.

Information Booster:

• Dominant and Recessive Alleles: The T allele for tallness is dominant over the t allele for shortness.
• Genotypic Ratio: In both experiments, the offspring will have a Tt genotype, leading to a 100% tall phenotype in the F1 generation.
• Mendel's Laws: These results align with Mendel's Law of Dominance, which states that the dominant allele will determine the organism's appearance when present.

Additional Information:

• Experiment 1: Involves cross-pollination where pollen from a tall plant fertilizes the ovules of a short plant.
• Experiment 2: Involves cross-pollination where pollen from a short plant fertilizes the ovules of a tall plant.
• In both cases, the offspring inherit one dominant and one recessive allele, resulting in tall plants due to the dominance of the tall allele.