The process by which a cell in culture acquires the ability to divide indefinitely, similar to the division of cancer veils; a change in genotype and phenotype due to the assimilation of external DNA by a cell, when the external DNA is from a member of a different species, transformation results in horizontal gene transfer. The exchange contains homologous DNA segments. The cell is now a recombinant, its chromosome contains DNA derived from 2 different cells

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water