One parent has the sickle cell disease gene, and the other parent does not. Which best describes the child’s chances of getting
sickle cell disease? impossible, because the child would have to inherit two copies of the gene
unlikely, because few children can be affected by inheriting one copy of the gene
possible, because the child would only have to inherit one copy of the gene
likely, because the child can be affected by inheriting two copies of the gene
The development of railroads was one of the most important phenomena of the Industrial Revolution. Trains provided supplies and equipment and a lifeline of the army. Trains made a big impact on the citizens. Railroads were visible symbols of industry and modernity during the Civil War.
