This study was conducted to genetically evaluate the performance of male and female broiler lines in National Animal Production Research Institute (NAPRI). Data on body weight and body linear measurements were obtained from 350 progenies consisting of 100 birds each for sire and dam line and 75 birds each for sire control and dam control respectively. The growth and body linear measurements traits considered were body weight (BW), body length (BL), Body girth (BG), Thigh length (TL), keel length (KL) and Shank length (SL) which were measured biweekly. 6 birds were sampled out from each groups to analyse for blood sample. The results of the least squares means of body weight and body linear measurements followed an increasing trend across ages for all the groups. No significant (P>0.05) differences were obtained in dam line, sire control and dam control but all showed significantly (P<0.05) higher weight than sire line at 4, 6 and 8 weeks of age. There were no significant (P>0.05) differences in body length at 2 weeks but significant (P<0.05) differences were observed at week 4, 6, and 8 weeks. There was no significant (P>0.05) difference in the biochemical parameters observed except in Serum Alkaline phosphatase (SAP) where the sire control showed the highest value 69.00mg/dl. Genetic correlations obtained in this study revealed that serum alkaline phosphatase showed positive correlations with body weight at 8 week for the selected lines but negative correlations was shown in the control birds. The genetic correlations among alkaline phosphatase and other traits were both positive and negative though mostly positive with selected lines. It is therefore concluded that, genetics had significant effects on body weight and body linear measurements.