A stock fund that allows an investor to exchange his or her large holding of a single stock for units in a portfolio.Exchange funds provides investors with a easy way to diversify their holdings, while deferring any taxes from capital gains.Also known as a swap fund. stock fund that allows an investor to exchange his or her large holding of a single stock for units in a portfolio.
1. heterograft-tissue from an animal of one species used as a temporary graft (as in cases of severe burns) on an individual of another species. xenograft. graft, transplant - (surgery) tissue or organ transplanted from a donor to a recipient; in some cases the patient can be both donor and recipient.
Heterosis, hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring.The adjective derived from heterosis is heterotic.An offspring exhibits heterosis if its traits are enhanced as a result of mixing the genetic contributions of its parents.eterosis is often discussed as the opposite of inbreeding depression although differences in these two concepts can be seen in evolutionary considerations such as the role of genetic variation or the effects of genetic drift in small populations on these concepts.