Answer:
A: A tool for showing possible alleles of offspring in a test cross
Explanation:
Punnet squares use the alleles of the parents to find possible alleles of their offspring.
Which is the first indicator of an infection in the body?
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B. an increase in the number of WBCs in the blood</span>
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.