Genetic engineering or gene therapy? “what is a gene introduced into bone marrow that results in "long-term" correction for a severe immune deficiency disease? ”

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab