<span>My pea plant has an unknown genotype for flowers, whether it has two dominant traits for white flowers (WW) or one dominant and one recessive (Ww) leading to white flowers; therefore I am doing a testcross in order to determine the genotype of my pea plant. The best plant to do this with is one that has a phenotype of purple flowers (ww) - that is, it is homozygous for the recessive trait.
If I use a homozygous recessive plant, I know exactly what its genotype is. I don't have to worry about whether it's got one or two dominant alleles; I know that at least half of my alleles are going to be the recessive w.
This makes identifying the offspring's genotype very simple. If I find that the offspring have at least some purple flowers among them, I know that my original plant had to be Ww; that is it had to have one dominant and one recessive allele for the flower color gene. If, however, all of the offspring are white flowers, I know that my original pea plant had both dominant alleles (WW).</span>
Photosynthesis is the process in which plants make their own food using light energy from sunlight in the leaves of the plants. The equation of photosynthesis states that the combination of carbon dioxide, water, and light energy produces a carbohydrate (glucose) and oxygen.
6CO2 + 6H2O +light energy = C6H12O6 + 6O2.
From the equation, six molecules of carbon dioxide and six molecules of water produces one molecule of glucose.
Therefore, 24 molecules of carbon dioxide and 24 molecules of water would produce or yield 4 molecules of glucose.
C. Absorbing hormones at Synapses
