Drosophila melanogaster have four pairs of chromosomes. a. what is the ploidy level at metaphase ii of meiosis? a. 8n b. 1n c. 4n d. 2n e. 0n b. what is the ploidy level at prophase of mitosis

The answer is d. 2n

Drosophila melanogaster have four pairs of chromosomes, so the normal cell would have 4n(four pairs) of chromosome. metaphase is the phase of cell division where the chromosome start to lining up in the middle. In meiosis II, the chromosome is already divided into half, so the total chromosome of the cell would be 2n(half of the 4n)

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus