good one jon on the unclean foods.in addition,i think that at least one objective of these laws was to markedly differentiate israel from the other nations and their unclean practices.cf deut 14 2.where the food laws follow on.some of these are now known to be health benificial though the main object was the illustration of the higher calling of israel v21.the same i think applies to the otherwise strange laws re mixed clothing.
no part of the bible is to be ignored but some of the OT is fulfilled in the new covenant.but when the teaching is the same in both testaments as regards what is sinful,you can be sure it still applies.

mp-i understand where you,re coming from as Christ certainly presents as forgiving. but he who is recorded as saying"neither do i condemn you" also said"go-and sin no more".he spoke of judgment as being the out come of non repentance and unbelief.
i am not qualified to comment on genetics other than to say that i understand that there is not universal agreement.
hard as it is,i believe that the christian is called to "deny himself"be he homosexual or hetersexual-eg unmarried,unhappy marriage or just plain temptation.
the bible would not support the idea that homosexuality is a design feature as adam and eve were clearly straight.sometimes it is a choice ,though i accept that for whatever reason some have never thought they were anything other than homosexual and i dont wish to make light of their difficulties.
best wishes pete.