HD is called an autosomal dominant disorder because only one copy of the defective gene, inherited from one parent, is necessary to produce the disease. The genetic defect responsible for HD is a small sequence of DNA on chromosome 4 in which several base pairs are repeated many, many times.
Carbon dioxide cannot pass through the protective waxy layer covering the leaf (cuticle), but it can enter the leaf through an opening (the stoma; plural = stomata; Greek for hole) flanked by two guard cells. Likewise, oxygen produced during photosynthesis can only pass out of the leaf through the opened stomata.
Split and merge into it. Answer by Fordevinjones. Confidence votes 83. Photosynthesis produces glucose (C6H12O6) which is required by organisms for respiration, it also gives off bi-products of O2 and water, the oxygen is released into the atmosphere or recycled by the plant in its own respiration reactions.plit and merge into it. Answer by Fordevinjones. Confidence votes 83. Photosynthesis produces glucose (C6H12O6) which is required by organisms for respiration, it also gives off bi-products of O2 and water, the oxygen is released into the atmosphere or recycled by the plant in its own respiration reactions.