Answer:
positive geotropism
Explanation:
The answer is positive geotropism
X chromosomes and X chromosomes develop as a girl and X and Y develop as a boy
The answer is transverse or t tubules. These invaginations into the skeletal muscles cells play a significant role in electrical conductivity of impulse across muscle or cardiac fibres. They regulate calcium concentration and it's release in ion channels hence enabling a forceful contraction of cardiac and muscle cells.