English to Spanish Medical Medical (general)

Estoy traduciendo un texto sobre diferentes trastornos del sueño y sus implicaciones. En varias ocasiones, sale el verbo "map to" pero, a pesar de que he visto las preguntas que ya se han hecho sobre este término, no sé si si alguna de las soluciones se puede aplicar aquí. Agradeceré cualquier sugerencia. Gracias.

By using gene profiling in 3 mouse inbred strains differing in their sleep need, we have identified Homer1a as the best transcriptional marker of sleep need. Interestingly, Homer1a *maps exactly to* the same chromosome 13 QTL that we had already identified for sleep need.

A recent study in Japanese sporadic narcolepsy patients identified a narcolepsy resistance gene on chromosome 21. However, this locus *does not map to* the adjacent region identified by us in a Franch family, nevertheless it has been shown that the expression of MX2, which *maps to* our chromosome 21 locus, is down-regulated in peripheral blood cells of Japanese narcolepsy patients.