Histamine is released when a cell come across an antigen
Answer:
Mutation
Random mating between organisms
Random fertilization
Answer:
The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
Answer:
A Dutch father-son team named Hans and Zacharias Janssen invented the first so-called compound microscope in the late 16th century when they discovered that, if they put a lens at the top and bottom of a tube and looked through it, objects on the other end became magnified.
Explanation:
Hope it is helpful...
Answer:
I think its B
Because its how its determine the orientation of the DNA. ? Hope this help
Explanation: