Здравствуйте.

Помогите перевести предложение:

This is partially explained by numerous gene-poor regions that display a remarkable degree of noncoding conservation with non-mammalian vertebrates, suggesting that they are functionally constrained.

Слова по отдельности понятны, но что в целом хотели сказать авторы, не ясно. Контекст:

Chromosome 5 is one of the largest human chromosomes and contains numerous intrachromosomal duplications, yet it has one of the lowest gene densities. This is partially explained by numerous gene-poor regions that display a remarkable degree of noncoding conservation with non-mammalian vertebrates, suggesting that they are functionally constrained. In total, we compiled 177.7 million base pairs of highly accurate finished sequence containing 923 manually curated protein-coding genes including the protocadherin and interleukin gene families.

http://www.nature.com/nature/journal/v431/n7006/full/nature02919.html

Если нужно, могу дать пояснения к отдельным генетическим терминам.