Question

Mendel did not observe linkage due to

• A. Mutation
• B. Synapsis
• C. Crossing over
• D. Independent assortment

Answer 1

Answer: (D)

Independent assortment

A.Mutation – A sudden inheritable, discontinuous variations due to change in chromosomes and genes is called Mutations. Mendel did not this one.

B.Synapsis – Pairing of homologous chrosmosomes in zygotene of meiosis is called synapsis. This one also not noticed by Mendel. Because of this reason he successfully explained the Law of independent assortment.

C.Crossing over – Exchange of chromatid segments between the non sister chromatids is called crossing over.

D.Independent assortment – When a cross is made between two individuals different from each other in two or more characters, then the inheritance of one character is independent of the inheritance of another character.

So, the correct option is ‘synapsis’.