Travis Johnson wrote:You never know with sheep what you will get with color.
I had an all white ram, mate with and all white ewe, and give twins: one is 100% white with not a blemish on her and another that was 100% black with not a blemish on her either! That was a curiosity, but since we witnessed the birth, there is no question what occurred and with whom! Both ended up being bottle-lambs so we ended up giving them names instead of numbers...Salt and Pepper.
Ah but you see that happens because black is recessive. So both parents were carrying a "black" gene but it didn't show up in them. Only when a lamb of theirs happened to inherit both black genes did it show up as black fleece. If you bred them hundreds of times, you would on average end up with 25% black lambs, but like flipping a coin, you could well breed ten lambs and none of them be black, so you would never know that the parents were carrying the black gene. Your white lamb from the mating could be carrying it, or she might not.
But it can't happen the other way round, i.e. two black sheep have a white lamb, because if either of them had the gene for "white" it would dominate and they would be white. If I'm right and black is a classic recessive gene. Unless it was a point mutation. But that lamb does look huge so my money is still on Larry!