Many rickettsia are PATHOGENS.
Pathogens are micro organism that cause diseases and rickettsia are majorly disease causing organisms. They are rod shaped bacteria and most species are gram negative. They are natural parasite of some arthropods and they cause diseases in both humans and animals.
The right answer is a colored square (or shaded).
Polydactyly is defined as the presence of one or more extra fingers in the hand or one or more toes in the foot.
It is a dominant trait, it means that the heterozygotes will express the trait.
In general, healthy men are represented by white squares, while sick men are represented by colored squares (most often in black).
The correct answer would be Venus
You didn’t state the investigation we need to apply the role of alcohol to