Answer: C
Explanation: Thymine pairs with Adenine and Cytosine pairs with Guanine.
If the offspring is a female, it means she got an X chromosome from her mom, and an X chromosome from her father.
Answer:Tissue
Explanation:Heart muscle cells beat in unison to push blood in timing with the rhythm of the heart, at the direction of nearby nerve cells. These muscle cells could best be called. Tissue. As cell division proceeds, the cells increase in number, but also become specialized in structure and function.
I believe it is scientific laws.