I have a DNA sequence of
ACA TGA, and a mutation happens. The new
sequence is AAT GA. What type of mutation
was this?

deletion

Explanation:

so before the sequence was ACA TGA and then transforms to ATT GA. Clearly one is missing because the second set is only 2, but we know for sure it is deletion because after C is deleted it goes onto to ATT

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.

i need