Complete the Punnett square and select the best response for this cross. (May take more than one Punnett Square)

Mrs. Lee has type A blood

Mr. Lee has a type B blood

Baby Lee has type O blood

Is it possible that Mr. Lee is NOT the baby daddy, and why?

a
no, he is most likely the father
b
yes, he is not the father because B is dominant
c
yes, if he is homozygous for B
d
no, a cross between type A and B can always produce type O

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.