T level Science Core B Biology Practice Test

The outcome of meiosis division results in daughter cells that are not genetically identical to the parent cell, which introduces variation. This is a key aspect of meiosis, as it is the process by which gametes (sperm and eggs) are produced in sexually reproducing organisms.

During meiosis, a single diploid parent cell undergoes two rounds of division: meiosis I and meiosis II. In meiosis I, homologous chromosomes—each consisting of two sister chromatids—are separated into different daughter cells. This separation, along with the process of crossing over (where homologous chromosomes exchange genetic material), leads to genetic diversity among the resulting cells.

Meiosis II resembles mitosis, where the sister chromatids are separated; however, because the starting cells were already genetically unique due to the events of meiosis I, the final daughter cells remain genetically varied. This variation is crucial for evolution and adaptation in populations, as it allows for new combinations of traits that can be acted upon by natural selection.

In contrast, options indicating that daughter cells are genetically identical or have double the DNA misinterpret the nature of meiosis, which is specifically designed to reduce chromosome number and create genetic diversity. Furthermore, the idea that daughter cells do