In which phase of meiosis do tetrads form?(1 point) Responses telophase I telophase I telophase II telophase II metaphase I metaphase I metaphase II
Tetrads form in the metaphase I phase of meiosis.
Tetrads form in the phase of meiosis called metaphase I.
To determine in which phase of meiosis tetrads form, we need to have a basic understanding of meiosis. Meiosis is a cell division process that occurs in sexually reproducing organisms to produce gametes (sperm or eggs) with half the number of chromosomes as the parent cell. Meiosis consists of two rounds of division called meiosis I and meiosis II.
During meiosis I, tetrads are formed. Tetrads are pairs of homologous chromosomes, consisting of two sister chromatids each. Homologous chromosomes are similar in size and carry the same genes but may have different alleles.
Now, let's go through the given options:
1. Telophase I: This is the final stage of meiosis I, where the homologous chromosomes have separated into two daughter cells. Tetrads have already formed before this phase.
2. Telophase II: This is the final stage of meiosis II, where the sister chromatids have separated and formed four haploid daughter cells. Tetrads do not form in this phase.
3. Metaphase I: This is the second stage of meiosis I, where tetrads align at the cell's equator. This is the correct phase when tetrads form.
4. Metaphase II: This is the second stage of meiosis II, where individual chromosomes align at the cell's equator. Tetrads do not form in this phase.
Therefore, the correct answer is metaphase I.