Because if the engineers are mixing genetics<span> around and making them not natural,</span>natural selection<span> won't work because the natural things won't be evolving in the natural way. </span>
D. Since first you think of what will happen if this and this happen and then you test it.
Answer:
spiral staircase
its a double helix, which is what DNA is
For a yellow cucumber and green cucumber to make a green cucumber you would need a dominant green cucumber and a recessive yellow cucumber. For a yellow cucumber and green cucumber to make a yellow cucumber you would need a dominant yellow cucumber and a recessive green cucumber.
