Infantile tay-sachs is a fatal disease caused by a recessive allele passed from parents to offspring. jennifer had a baby brother who died of infantile tay-sachs disease (tsd), but jennifer did not have the disease. when she grew up and got married, her third child also died of infantile tsd. how is this possible?

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

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