Question

Who proposed chromosomal theory of inheritance?
A. Sutton and Boveri
B. Bateson and punnett
C. Thomas morgan
D. Avery

Answer 1

Hint: This is a major genetic theory which explains the inheritance of traits. It was introduced after the work of Mendel. This also explained the variation of traits in male and female.

Complete answer: Chromosomal theory of inheritance was given by Boveri and sutton. They stated that a particular gene is located in a particular location on a particular chromosome. They also explained the role of meiosis for the genes to show their traits.
Mendel's genes are present in a homologous pair in an organism. This pair is formed from both mother and father with one each. On gamete formation this pair is divided and the sperm and egg receives a single from the pair. This is referred to as Mendel's law of independent segregation.
The theory was controversial at first because there was no direct evidence to support the theory but still there was wide research done on the chromosomes.
After years Thomas Morgan and his students explained this whole genetic theory on firefly with evidence. He explained the mutations on the color of the eyes of a fly. He also explained the variation in male and female characters.

So the correct answer is A i.e. Boveri and Sutton.

Note: Thomas Morgan and his students explained this whole genetic theory on firefly with evidence. He explained the mutations on the color of the eyes of a fly. This was a major breakthrough for the genetic aspect to study and locate every gene on the chromosome and the difference between the genes of a male and female.