Define the following terms related to the operation of the immune system. immunological memory:

specificity: .

self-tolerance: .

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere

Types of scientific inquiry that biologist engage in that cannot be completely controlled

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring