Gregor Mendel formulated some basic principles of heredity from the results of his experiments with
1) Drosophila
3) four o'clock plants
2) bacteria
4) pea plants

this is math not biology xd

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

idk im sorry.