Choose the correct statement.
A) Chromosomal theory of inheritance supports dominance.
B) Chromosomes are the hereditary unit which exists with multiple characters known as an allele.

C) The Mendelian factor is located on the chromosomes.

The correct option is C All of the above
The law of dominance is the first law of chromosomal inheritance which states that whenever the dominant allele is present, the dominant allele will express itself. The expression of the recessive allele is suppressed in the presence of dominant allele.

The chromosomes were considered as the hereditary unit. There are factors known as genes. There are alleles which are alternative form of genes which are located on the chromosomes and are inherited to the next generation. These alleles are responsible for the expression of the character.

The genes were said to be Mendelian factors. These factors are present along the length of the chromosomes.

Thus, the correct answer is option D.