If an individual has the genotype bb, what alleles can it pass on to its offspring?
O A. Only B
OB. Only b
O C. Either B or b
O D. Neither B nor b

there really is life in the deepest part

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.