Populations evolve for many reasons. suppose there is a population of plants that have either purple flowers or white flowers, and the allele for purple flowers is dominant. this means that plants with two purple alleles have purple flowers. plants with one purple allele and one white allele also have purple flowers. only plants with two white alleles have white flowers. for each event or condition described below, answer the following questions. a. which mechanism of evolution is at work? b. how does this event affect the population's gene pool? c. do the frequencies of the two alleles change, and if so, how?

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact forest area cleared to construct an airport increase in oxygen level vegetation cleared to construct an oil mine increase in pollution impact of human activities human activity impact forest area cleared to construct an airport increase in sound pollution vegetation cleared to construct a power plant contamination of water impact of human activities human activity impact beehives cleared from urban areas increase in vegetation dams constructed on a river increase in fish population impact of human activities human activity impact beehives cleared from urban areas increase in bird population dams constructed on a river better quality of water

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Moving down the ramp from 6 meters to