Not sure what the options are, but artificial selection would be when farmers/breeders choose only to plant/breed the organism with desired characteristics in order to cause the evolution of the trait while natural selection is when organisms that are better adapted to their environment usually survive and produce offspring, causing the evolution of their traits which help them to survive.
Hope that helps!
They all have the disease. However, carriers are generally consider those who can give the disease, but don’t have it themselves. This would make the answer Lisa and Monica as they have the recessive gene, but only have one allele, meaning they carry the gene for color blindness, but fortunately do not have it due to the dominant allele being normal.
The rules of base pairing explain the phenomenon that whatever the amount of adenine (A) in the DNA of an organism, the amount of thymine (T) is the same (Chargaff's rule). Similarly, whatever the amount of guanine (G), the amount of cytosine (C) is the same.
Children can be 1/2 Ai or 1/2 Bi
