Ultraviolet light can cause mutations and other damage within cells, which can hurt an individual's chance of surviving and leaving offspring. some molecules can protect cells from damage by uv. the amount of these molecules is determined by genes. within a
population, some individuals make more of these uv- protection molecules than others. what do you predict would happen to the frequency of the genes that cause more of the molecules to be made in a population over time? assume all other factors are equal.

1. the frequency would increase because individuals need the genes.
2. the frequency would increase because individuals with the genes for more molecules would
leave more offspring.
3. the frequency would decrease because molecules are types of chemicals, and having more chemicals in the body is harmful.
4. the frequency would stay the same because populations do not change over time.

2. The frequency would increase because individuals with the genes for more molecules would leave more offspring.

Explanation:

The individuals with the genes for more molecules (A) will be more successful than the individuals with genes for less molecules (B), because the frequencies of (B) trend to 0 due to this group have individuals with fewer chances of leaving an offspring because they are  more susceptible to UV ray's damages.

you know that this symptom is misleading and quite often is related to: heart attack

a heart attack is a condition that occurs when the blood flow that transports oxygen to the heart muscle is damaged or cut off completely. the coronary arteries that supply the heart muscle with blood flow can be blocked by the accumulation of plaque. also, when the plaque within the heart artery breaks, it creates blood clot that can also hinder the blood flow. men that are over 45years of age and women that are over 55years of age are at risk of having a heart attack. the symptoms of a heart attack include chest discomfort, chest pain, coughing, and shortness of breath.