Question

Chromosomal theory of inheritance was proposed by:

• A. Sutton and Boveri
• B. Bateson and Punnett
• C. T. H. Morgan
• D. Watson and Crick

Answer 1

The correct option is A Sutton and Boveri

Chromosomal theory of inheritance was proposed by Sutton and Boveri. They noted that the behaviour of chromosomes was parallel to the behaviour of genes in the following ways:

• Both chromosomes and genes occur in pairs.
• Both chromosomes and genes segregate at the time of gamete formation such that only one member of each pair is transmitted to a gamete.

Sutton united the knowledge of chromosomal segregation with Mendelian principles and called it the chromosomal theory of inheritance.

The experimental verification of chromosomal theory of inheritance was given by T. H. Morgan based on his experiments conducted on Drosophila melanogaster.

Bateson coined the term Genetics and he, along with Punnett, co-discovered the gene linkage.

Punnett also introduced the concept of punnett square for finding out the probability of all possible genotypes of offspring in a genetic cross.

Watson and Crick proposed the double helical model of DNA.