What is a new method of for computing heritability that may replace the use of twin studies? case studies. total variance statistics. genome-wide association studies adoption studies.

The correct answer is: Genome-wide association studies.

Genome-wide association study is a study of genome-wide set of genetic variants. It is performed in different individuals in order to see if any variant is associated with a trait. Most commonly observed variants are single-nucleotide polymorphisms (SNPs) and their association with traits like major human diseases.

the organisms are not adapted to live in some communities or habitats.