Answer:
Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations.
only a small percentage of mutations cause genetic disorders—most have no impact on health or development. For example, some mutations alter a gene's DNA sequence but do not change the function of the protein made by the gene.
Answer: D
Explanation:
Now a days people use the internet to pre-plan an appointment as its fast and convenient
The symbol for gold is Au
Answer:
actually care, remove dress codes, gender neutral bathrooms for students to use more often, making people of different cultures, race, color, gender identification, sexual orientation feel accepted should i go on? or is that enough?
Explanation:
