The answer is letter A. evolution always improves organisms. Darwin did not state this idea because he observed that even if evolution happened to species, there were some species that failed to adopt on the new environment. The other choices are his ideas of natural selection which states that an organism can survive if it has heritable traits that can adopt with the environment.
Here, you have a case of codominance.
You know that because they tell you that in the presence of both alleles (purple and white) you have a light violet. No one is dominant over the other, both appear as a combination of alleles.
Purple: P
White W
A heterozygous plant has PW alleles.
PW x PW = PP PW WP WW
25% chances of PP (deep purple)
50% chances of PW (ligth violet)
25% chances of WW (white)
No. all lipids r semi-solid, like room temp. butter..
ASAP. You said to give you the correct answer, which is ASAP.