Final answer:
The question about a 'biological window' for phonology and morpho-syntax lacks context and cannot be answered as presented. Morpho-syntax is the study of how the forms of words are combined with sentence structure to construct meaning in a language.
Step-by-step explanation:
The concept of a biological window for phonology and morpho-syntax relates to the idea that there is an optimal period during which the human brain is particularly receptive to language acquisition, including the understanding of sounds (phonology) and the structure of words and sentences (morpho-syntax). While there may be some parallel concepts in cognitive linguistics and developmental psychology, the question presented seems to be incomplete or lacks a clear context. Therefore, it is not possible to definitively answer this question with a simple true or false without additional information.
Turning to the other points, morpho-syntax refers to the combination of morphology and syntax. Morphology is the study of the forms of words, while syntax is the arrangement of words and phrases to create well-formed sentences in a language. This domain is pivotal in linguistics because it helps in understanding how meaning is constructed and interpreted in human language.