If it's the same diagram as mine then it should be the control center of the cell
The three parts are the endosperm, embryo, and the seed coat.
I hope that answered your question.
Well there alot of challenges faced by biologist researchers during the research of infectious disease, however major of those include the followings:
1- Defining and measuring the fitness for pathogens across the scales
2- Developing models to capture the impact of co-infection on the evolutionary process
3- Modeling how pathogen characteristics shape the evolution of hose immune diversity
4- Understanding the maintenance of pathogen diversity
5- Developing the better models for the impact of genetic systems on pathogen evolution .
Answer:
A scientific theory.
Theories are never set in stone, but are widely accepted and have evidence to support them.
50% if the B blood type parent is heterozygous