Match column I with column II.
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{i. Behaviour of chromosomes}& \text{p. Occur in pairs}\\ \text{ii. Laws of inheritance}& \text{q. Parallel to genes}\\ \text{iii. Chromosomes and genes}& \text{r. Occur on same loci}\\ \text{iv. Alleles}& \text{s. Mendel}\end{array}$

The correct option is D (i) - q, (ii) - s, (iii) - p, (iv) - r
The correct answer is
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{i. Behaviour of chromosomes}& \text{q. Parallel to genes}\\ \text{ii. Laws of inheritance}& \text{s. Mendel}\\ \text{iii. Chromosomes and genes}& \text{p. Occur in pairs}\\ \text{iv. Alleles}& \text{r. Occur on same loci}\end{array}$

As per the study conducted by Sutton and Boveri they discovered that the behaviour of chromosomes is parallel to genes.

Laws of inheritance are stated by Mendel. They include Law of Dominance, Law of Segregation and Law of Independent assortment.

Chromosomes and genes occur in pairs.

The alleles of the gene occur on the same loci or homologous sites on homologous chromosomes.