The present work was conducted to elucidate the relationships between chronological age, testosterone concentration and testis size of Najdi and Naemi ram lambs under desert conditions to determine the reproductive capacity of the above two breeds. The postnatal development of the seminiferous epithelium of the testes was also monitored. A total of 90 (45 Najdi and 45 Naemi lambs) aged between one and nine months, with five lambs at each month of age for each breed were used.

The present study was conducted to assess the genetic diversity and population genetic structure of
three sheep populations namely; Sawakni (SW), Berberi (BR) and Najdi (NJ), in Saudi Arabia, utilizing
45, 18 and 31 individual blood DNA extractions, respectively. Seventeen microsatellite markers were
used to genotype these 94 sheep individuals. There were 195 alleles generated employing the 17
microsatellites loci with a mean of 11.47 alleles per locus, with a range of observed and expected

This paper argues that Arabic function words (FWs) vary in usage between old and modern Arabic, thus prompting an experimental investigation into their changeability. This investigation is carried out by testing classical Arabic (CA) in Arabic heritage language (AHL) texts—those labelled as archistratum—and the modern standard Arabic (MSA) of Arabic newspaper texts (ANT), each group of which contains randomly collected 5 million (M) word texts.