This paper reflects on the social consequences of biotechnological control of population for values and ethics of care within the family household in rural north India. Based on long-term ethnographic research, it illustrates the manner in which social practices intermingle with reproductive choices and new reproductive technologies, leading to a systematic elimination of female foetuses, and thus, imbalanced sex ratios. This technological fashioning of populations, the paper argues, has far-reaching consequences for the institutions of family, marriage and kinship in north (...) India particularly in relation to care circulation within the family-household leading to a shifting local ethics of care. (shrink)