Easy Medal

Several bacterial colonies are placed on a petri dish that contains agar with antibiotics. After 24 hours, ninety percent of the original bacterial colonies die, but the remaining ten percent survive and later reproduce. Which of the following theories is demonstrated by this experiment?

spontaneous generation
natural selection
Mendelian genetics
parasitism

Question

Easy Medal

Several bacterial colonies are placed on a petri dish that contains agar with antibiotics. After 24 hours, ninety percent of the original bacterial colonies die, but the remaining ten percent survive and later reproduce. Which of the following theories is demonstrated by this experiment?

spontaneous generation
    natural selection
    Mendelian genetics
    parasitism

destinymasha · Answer

natural selection

destinymasha · Answer

the process whereby organisms better adapted to their environment tend to survive and produce more offspring.