Question

in humans, there are 23 pairs of these
formed during interphase
separated during mitosis
maternal and paternal pairs
attached to each other by cohesin
numbered in a karyotype
replica of single chromosome
homologous chromosomes (1/2)
sister chromatids (2/2)

Explanation:

Homologous chromosomes come in pairs (maternal - paternal), numbered in karyotypes, and there are 23 pairs in humans. Sister chromatids are formed during interphase as replicas of a single chromosome, attached by cohesin and separated during mitosis.

Answer:

Homologous chromosomes: In humans, there are 23 pairs of these, Maternal and paternal pairs, Numbered in a karyotype
Sister chromatids: Formed during interphase, Separated during mitosis, Attached to each other by cohesin, Replica of single chromosome