With the use of Assisted Reproductive Technologies, the number of participants in the procreative process has increased from the biologically required minimum of two to as many as six or even eight. The law must adjust to these possibilities. While there may be additional nonbiological claimants to parentage, this Article sets forth the conceptual starting point that frames the legal definition of parentage, namely, that the law must recognize as parent any individual (regardless of gender, sexual orientation, or marital status) who is biologically related to a child. The distinction between lender and donor for providers of genetic material in ART would clarify both the sword of seeking parental rights and the shield of avoiding parental...