Question

Which of the following points further strengthened Mendelism?

• A. Law of independent assortment which based on monohybrid cross
• B. Law of independent assortment which could be stated on the basis of segregation of gametes
• C. Incomplete dominance gave a new way to mendelism
• D. A character controlled by a pair of unit factors

Answer 1

Answer: (D)

A character controlled by a pair of unit factors

Law of independent assortment is based on dihybrid cross. In this, two characters or genes do not influence each other and separate independently during gamete formation. Incomplete dominance is a non-mendelian genetics in which intermediate phenotype is observed for heterozygous organism. During Mendel's study, the trait that did not appear in F${}_1$ generation reappeared in F${}_2$. Mendel called the substance responsible for each trait as factor. He stated that a character is controlled by a pair of unit factors. Later this factors were known as alleles.

Thus, the correct answer is option D.