So you don’t tear any tissue and so they get more elastic.
Answer:
d. Ao x oo
Explanation:
The other crosses with A would all result in complete dominance because the alleles (other than A) from the other parent are dominant. Because option D. crosses a h o m o zygous parent with a recessive trait, the cross could produce a child with blood type A.
C. The object would be white. White is like the mother of colors, and besides, black wouldn't let you see anything. Blue and yellow are NOT relevant.
I believe that the answer to your question would be A. Heart Begins.