During zygotene stage of meiosis I, a remarkable pairing of chromosomes occurs. Look at the bottom part

Question:

During zygotene stage of meiosis I, a remarkable pairing of chromosomes occurs. Look at the bottom part of Figure 4-19 in which “mitosis: growth of the body” has produced cells with four different types of chromosomes. The black ones came from the sperm nucleus. The red ones came from the egg nucleus. If one of these nuclei were to undergo meiosis, which chromosomes would pair during zygotene (which are homologous)—the long black one with the short black one or the long black one with the long red one?

Figure 4-19