Next, morgan crossed the red-eyed f1 males with the red-eyed f1 females to produce an f2 generation. the punnett square below shows morgan’s cross of the f1 males with the f1 females.
drag the labels to their appropriate locations to complete the punnett square for morgan’s f1 x f1 cross.
drag pink labels onto the pink targets to indicate the alleles carried by the gametes (sperm and egg).
drag blue labels onto the blue targets to indicate the possible genotypes of the offspring.
labels can be used once, more than once, or not at all.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.