Answer: Gregor Mendel’s careful work with thousands of pea plants in the 1860 proved the blending hypothesis wrong and explained how inheritance really happens.
Mendel then crossed a true-breeding purple flower plant and a true-breeding white flower plant. This is called a monohybrid experiment. A test cross is performed between two plants that breed true for one trait, and the resulting trait for each offspring plant is determined
A chart of a monohybrid experiment between a purple and white flower
The first, true-breeding generation, is called the parent, P generation. The first generation of offspring, the first filial generation, is the F1 generation. Mendel found that these plants all had purple flowers. The F1 generation was crossed with itself. The next generation, F2 generation, had a 3:1 ration of purple to white flowers.
If the blending hypothesis was correct, the F1 generation should have all had light purple flowers. Instead, all the F1 plants had dark purple
The F1 plants all have one purple allele and one white allele . The genotype is the alleles for each gene in the plant. Here the genotype is Pp. A plant with two of the same alleles is homozygous. A plant with two
This inheritance model is explained using a Punnett square.
Explanation:
