Inbred and non-inbred first cousin marriages

ABSTRACT

Three types of first cousin marriages, i.e, first cousin [wife] marriages [ICW]; first cousin [husband] marriages [ICH], and first cousin [new] marriages [ICN] were identified in the present study. The two inbred first cousin marriages [ICW, ICH] indicate higher percentage of prenatal and postnatal deaths compared to ICN-marriages. ICW-marriages show significantly higher stillbirths and abortions compared to ICN-marriages, but ICH-marriages show non-significant differences. An attempt has been made to explain that why ICW-marriages have more harmful effects on the progeny compared to other two types of marriages