immune system, n the group of organs, cells, and chemicals that protect the body from harmful viruses, bacteria, and abnormal cells. It includes bone marrow, proteins, the thymus, the spleen, the lymphocytes, and other white blood cells.
50% from each parent: one allele in each gene, each parent, for a total of two. 2 people found this useful. Edit. Share to: 1  College Admission Interview Dos and Don'ts Some colleges offer applicants the opportunity to interview on campus or close to home.
Brief genetics review â¢ Diploid organisms have 2 homologous copies of each chromosome (2n) â¢ Allele â one of two or more alternative forms of a gene located at a single point (locus) on a chromosome-Homozygote: alleles same-Heterozygote: alleles different â¢ Populations contain individuals with different alleles.