Gene mutation such as substitution or deletion can occur due to

1) Viruses

2) Errors in DNA replication

3) Mutagens such as cigarettes and UV rays

the sunflower because each experiment got the same results

hope this !

-payshence

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.