Answer:
mutation in DNA
Explanation:
Mutations are changes in the genetic code that can occur in many ways. Each time a cell divides, say, DNA must be copied into two copies, one copy for each new cell. Although this copying is very precise, it is still not perfect - for about every billion accurately copied databases, one is mistranslated.
Another source is DNA damage, which can occur spontaneously through the normal life of the cell, or through external toxins or negative influences (ultraviolet radiation, for example). Through evolution, cells have developed a very complex system for repairing changes in DNA, but these systems not only have limitations but can sometimes cause additional errors themselves.
Answer: C) a factor that may affect an experiment or investigation
Explanation:
This is the best answer. A and B can be eliminated. D describes a controlled variable which is more specific than a scientific variable, thus C is the best answer. It is the best description of just a scientific variable.
Answer:
I believe that the lizards from the two populations, both short legged and long legged will still mate and reproduce. First of all, the lizards are still of the same species. Secondly, the lizards would mate and reproduce because it will increase their species chances of survival. In general, any chance of increasing survival rates will be taken in any natural circumstance.
Explanation:
Animal because the algae and plant would have to have chloroplast and the bacterium does not have a nucleus as it is a prokaryote.
