To perform a testcross, scientists cross an organism with an unknown genotype with a homozygous recessive organism.
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The mother has the alleles A and M, given that her blood type is A MM. Since the child has blood type AB MN, then the child has the alleles A, B, M, N. However, the alleles B and N, cannot have come from his/her mother and must have come from the father. Therefore, we are looking for a father with the alleles B and N. Based on this conclusion, the child's father is either Tom (with blood type AB MN) or Bill (with blood type B MN).
Identify the stage of cellular respiration in which each of the FOLLOWING takes place.
Where are the FOLLOWING ???
(C.) The layers of the Earth are uniform in thickness
This is untrue. The mantle is far large than the crust and there are other large size differences.
Answer:
Earth is between the Moon and the Sun.
Explanation:
Because the moon has moved in its orbit so that the earth is between the Moon and the Sun.