Suppose you are heterozygous for two genes that are located on different chromosomes. You carry alleles A and a for one gene and alleles B and b for the other. Label the stages of meiosis, the homologous chromosomes, sister chromatids, nonhomologous chromosomes, genes, and alleles.

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1. Identify the stages of meiosis: Meiosis consists of two main stages, Meiosis I and Meiosis II. Each stage is further divided into phases: Prophase, Metaphase, Anaphase, and Telophase.
2. Label the homologous chromosomes: Homologous chromosomes are pairs of chromosomes that contain the same genes but may have different alleles. In this case, one pair consists of chromosomes with gene A and a, and the other pair with gene B and b.
3. Distinguish sister chromatids and nonhomologous chromosomes: Sister chromatids are identical copies of a chromosome connected by a centromere, formed during DNA replication. Nonhomologous chromosomes are chromosomes that do not pair during meiosis, such as chromosomes carrying different sets of genes (e.g., one carrying genes A and a, and another carrying genes B and b).
4. Identify the genes and alleles: Genes are segments of DNA that code for proteins or functional RNA. Alleles are different versions of a gene. In this scenario, gene A and gene B are located on different chromosomes, and each has two alleles - A and a for gene A, B and b for gene B.
5. Visualize the distribution during meiosis: During Meiosis I, homologous chromosomes separate, leading each daughter cell to receive either chromosome with A or a, and either chromosome with B or b. In Meiosis II, sister chromatids separate, ensuring each gamete receives one copy of each gene.