Genetic drift is defined as a shift in the allelic frequency of a population. This can be caused by natural selection which is the differential survival and reproduction of individuals across a population due to differences in phenotype. Natural selection favors particular traits in a population hence these individuals are able to reproduce while the individuals with disadvantageous traits will pass their genes to succeeding generations. This way the allelic frequency of succeeding generation will be diferent from that of the parent population.
<span>In a way, the process of primordial germ line isolation encourages / supports abortions. I feel that, those who choose to terminate their pregnancies under their own consent are going to do so regardless of how their undeveloped baby is going to be utilized after the face. The process of primordial germ line isolation merely utilizes what otherwise would be waste</span>
Earthquakes occur because of the pressure and density.
Protein synthesis can be increased by <span>a) turning on gene expression.</span>
