The process of separating proteins based on their net charge is: MCQ with Answer and Explanation

Explanation:
The pineal gland, a small endocrine gland in the brain, secretes melatonin in response to darkness, regulating circadian rhythms and sleep patterns. The pituitary controls other glands, thyroid metabolism, thymus immune development.

Explanation:
Convergent evolution occurs when distantly related organisms independently evolve similar traits or structures to adapt to similar ecological niches or environmental pressures. The resulting structures are called analogous organs (e.g., wings of birds and insects, eyes of octopuses and mammals). Divergent evolution is when related species evolve different traits (homologous organs). Coevolution is when two species evolve in response to each other.

Explanation:
Genetic drift is a random change in allele frequency, more pronounced in small populations, and can reduce genetic diversity. Natural selection leads to adaptation.