The correct answer is letter D. Though choosing an appropriate work out attire is a contributing factor for increasing your motivation to exercise, it is not totally necessary to buy or invest in expensive items when beginning an exercise program.
<span>What matters is you choose to wear something that you feel comfortable with especially when moving.</span>
Recombination creates the diversity.
A narcotic has been prescribed
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.
