Assertion: Behaviour of chromosome is parallel to gene.
Reason: Genes are located on the chromosome. a. Both assertion and reason are true and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true, but reason is false. d. Both assertion and reason are false.

Sure, here are the step-by-step solutions: - Assertion: During Anaphase of meiosis I, the two chromosome pairs can align at the metaphase plate independently of each other. - Reason: Sutton and Boveri argued that the pairing and separation of a pair of chromosomes would lead to the segregation of a pair of factors they carried. To determine if the assertion and reason are true and if the reason is the correct explanation of the assertion, we need to evaluate each statement separately. First, let's evaluate the assertion. During Anaphase I of meiosis, homologous chromosomes separate and move towards opposite poles of the cell. The alignment of the chromosome pairs at the metaphase plate is a key step in this process. This step allows for the proper segregation of chromosomes and the formation of haploid cells. Now, let's evaluate the reason. Sutton and Boveri were early pioneers in the field of genetics. They proposed the chromosomal theory of inheritance, which suggested that genes are located on chromosomes and are responsible for the inheritance of traits. They also observed that the pairing and separation of chromosomes during meiosis led to the segregation of factors (genes) that they carried. This idea helped to explain the observed patterns of inheritance and supported the chromosomal theory of inheritance. Based on this evaluation, we can conclude that both the assertion and reason are true. Furthermore, the reason provides a correct explanation for the assertion. Therefore, we can accept the given statement as true.