Final answer:
Ryan and Javier may use a surrogate mother and gestational carrier with one partner's sperm and a donor egg for a biological connection to their child.
Step-by-step explanation:
Ryan and Javier, as a gay couple wishing to have a biological connection to their child, have methods available to them supported by medical advances. The method their doctor is likely to recommend is the use of a surrogate mother and gestational carrier. This involves finding a woman who agrees to carry the pregnancy, with one partner's sperm used to fertilize a donor egg through in vitro fertilization (IVF). The resulting embryo is then implanted into the surrogate's uterus. This method allows for a biological connection from at least one partner. Another option is sperm donation to a surrogate if both partners wish to have separate biological children in the future.