I believe the difference is that Tropical rainforests are warm and moist while the temperate rainforests are cool. Temperate rainforests have four seasons; spring, summer, fall and winter, while tropical forests experience warm weather all year round and do not have the same set of seasons. Additionally; tropical rainforests experience much higher rainfall than temperate rainforests.
to determine whether traits can be inherited independently
Explanation:
the use of dihybrid crosses allowed him to discover the law of independent assortment / discovering that each locus had 2 alleles which segregate during the creation of gametes.
A vaccine is used to provide active acquired immunity to the host by supplying them with a biological preparation which is often made up of attenuated organism, its associated immunogenic particle, protein, DNA, etc.
Today there are vaccines available for a wide variety of diseases however there is no preventive vaccine for listeriosis.
Listeriosis is a disease caused by <em>Listeria monocytogenes</em> and it is a very serious disease often caused due to the consumption of contaminated food.
There is unavailability of a commercially available vaccine against listeriosis although a lot of research is underway to prepare a vaccine to reduce the mortality rate.