I believe the answer is (ALS) Lou Gerrigs disease. Usually, with this process is a neuro-muscular disease. patient's can suffer it's complications 4 7-10 yrs. the end result is usually patient looses function of the diaphragm muscles that lead to suffocation.
<span>Parents can pass on chromosomes to their children that are different than their own when the new gene combinations are created by crossing over. The exchange of genetic material between homologous chromosomes is known as crossing over which occurs in meiosis. When homologous chromosomes pair up and exchange different segments of the genetic material. As the result, a new combination of genes will be formed. If there was not crossing over, all genes on a chromosome would be inherited together.</span>
D is the answer
It’s cell,tissue,organ, organ system
<span>It is the link between all organisms on earth, binding each into an interdependant ecosystem, in which all species have their role. It is the web of life. The Earth's natural assets are made up of plants, animals, land, water, the atmosphere and humans. If that didn't help sorry</span>
