Question

It is, for example, quite successful in predicting inheritance: the square shows all the offspring would inherit the dominant characteristic of Brown Eyes and would also be Tt, or heterozygous. This type of information, presented in a Punnett square, allows the probabilities of inheritance to be understood.

Answer 1

I can tighten and clarify that passage. Here are a few improved versions plus a short explanation you can use.

Concise:
"For example, a Punnett square for a cross between a homozygous dominant parent (TT) and a homozygous recessive parent (tt) shows all offspring will be heterozygous (Tt) and display the dominant brown‑eye phenotype."

Slightly more detailed (classroom style):
"A Punnett square makes inheritance probabilities easy to see. If one parent is homozygous dominant (TT) for brown eyes and the other is homozygous recessive (tt), every offspring will inherit one T and one t allele (Tt). All offspring therefore show the dominant brown‑eye trait while being heterozygous."

Visual example (2×2):
| t | t
---+----+----
T | Tt | Tt
T | Tt | Tt

If you want, I can adapt the wording for a lab report, a textbook, or a simpler explanation for younger students.