Answer:
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism.
Answer: By studying fossils, we can tell how long someone has been on the earth for.
Explanation: We can easily learn where they lived, how they lived, and their past.
Mary Dimmick Harrison - First Lady (1889-1893)
Answer:
Suppose you have a parent plant with purple flowers and a parent plant with white flowers. Because the b allele is recessive, you know that the white-flowered parent must have the genotype bb. The purple-flowered parent, on the other hand, could have either the BB or the Bb genotype. The Punnett square in Figure below shows this cross.
Explanation: