Which are true of meiosis but not mitosis? Select three options. It generates genetically different cells.
It generates haploid cells.
It involves prophase, metaphase, anaphase, and telophase.
It involves two rounds of nuclear division.
It begins with a diploid cell.

Causation can be proved by using an

As you sit in the library with your friend studying for your weekly quiz on the integumentary system, you come upon an article about the hazards of prolonged exposure to the sun's rays. your curious nature leads you to research the subject further. you're fascinated to learn that minimal exposure to the sun allows you skin to manufacture vitamin d, which is important to maintain homeostasis. you also read that although sunscreen can protect you from the ultraviolet (uv) rays of the sun, some medications can actually increase a person's sensitivity to the sunlight.

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4