single parent是什么意思

双语用例

• Family structure (divorced\ other single parent\two-parent family) at the age of 14 was included.

• This was classified as either single parent or two-parent depending on the child's family placement at birth.

• This is due to the selection of a small number of parents (a single parent in these simulations), analogous to the phenomenon of genetic drift.

• Low birth weight is also related to maternal stress, a lack of social support, and being a single parent.

• We assume that individuals live for two periods and have a single parent and a single child, that is, there is no population growth.

• To generate the full call graph the data for a single parent to multiple children is needed.

• However, analyses of individual patterns yield a surprising result : no single parent adheres to this group pattern.

• Heritabilities were calculated from single parent regressions involving the regression of family means onto parental means.