Measuring photosynthesis via the production of oxygen. Oxygen can be measured by counting bubbles evolved from pondweed, or by using the Audus apparatus to measure the amount of gas evolved over a period of time.
Her mother's genotype cannot be determined because it only says that the couple's first child has hearing. We cannot determine the genotype of the mother just only using the siblings or the genotye of the male or husband of the mother. So the answer in this queston is the mother's genotype cannot be determined.
The fungus could be either a saprotroph or a heterotroph. A saprotroph is a decomposer. A heterotroph consumes an organism for energy.
True...................................
