In a species,the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average reight between 3 to 3.3 kg survive whereas 99% of the infants born with weight from 2 to 2.5 kg or 4.5 to 5 kg die.Which type of selection process is taking place ?
Stabilizing or balancing selection -
A type of natural detection which leads to the elimination of organism having over specialised characters and maintains homogeneous population which is generally constant.
It favours the average or normal phenotypes. Results in very low rate of evolution.
Stabilizing selection favours the medium types while the extreme phenotypes are eliminated.
Directional SelectionOption 2)
Stabilizing SelectionOption 3)
Disruptive SolutionOption 4)