D. 99% of all living things that have ever existed are now extinct
Answer:
Genetic drift
Explanation:
Genetic drift is defined as the random change in allelic frequencies from one generation to the other.
Genetic drift is an evolutionary mechanism in which the allelic frequencies in a population change through many generations. Its effects are harder in a small-sized population, meaning that this effect is inversely proportional to the population size. Genetic drift results in some alleles loss, even those that are beneficial for the population, and the fixation of some other alleles by an increase in their frequencies. The final consequence is to <u>randomly</u> fixate one of the alleles. Low-frequency alleles are the most likely to be lost. Genetic drift results in a loss of genetic variability within a population.
Genetic drift has important effects on a population when this last one reduces its size dramatically because of a disaster -bottleneck effect- or because of a population split -founder effect-.
C. All of the above
The cell membrane helps maintain the osmotic potential by doing both A and B, it does not make ATP however.
Idk the genotype but I have to answer a question so
Answer: Anatomy is the study of the structure and relationship between body parts. Physiology is the study of the function of body parts and the body as a whole.
Explanation: Hope this helped! :)
