Question

1. matching chromosomes are called __________________ pairs.
2. during prophase i of meiosis, these pairs form a tetrad in a process called _______________

Explanation:

Matching chromosomes with the same genes (one from each parent) are called homologous pairs. In prophase I of meiosis, homologous pairs align and form tetrads through the process of synapsis.

Answer:

homologous
synapsis