Question

The scientist who noted that “The behaviour of chromosomes was parallel to the behaviour of genes” were:

• A. Sutton and Boveri
• B. de Vries, Correns and Tschermak
• C. Punnett and Bateson
• D. Morgan and Bridges

Hint:

Sutton and Boveri proposed: \[ \text{Chromosomal Theory of Inheritance} \] by correlating chromosome behaviour with Mendelian inheritance.

Answer 1

The Correct Option is A

Step 1: Recall chromosomal theory of inheritance
• Walter Sutton and Theodor Boveri observed similarities between: \[ \text{behaviour of chromosomes} \] and: \[ \text{behaviour of Mendelian factors (genes)} \] during meiosis.
Step 2: Their observations They noted that:
• Chromosomes occur in pairs.
• Genes also occur in pairs.
• Chromosomes segregate during gamete formation.
• Genes also segregate according to Mendel's law. These observations led to: \[ \text{Chromosomal Theory of Inheritance} \]
Step 3: Analyze other options
• de Vries, Correns and Tschermak rediscovered Mendel's laws.
• Punnett and Bateson worked on linkage.
• Morgan and Bridges provided experimental proof of chromosomal theory. Thus the scientists who first noted the parallel behaviour were: \[ \text{Sutton and Boveri} \] Therefore: \[ \boxed{\text{(A)}} \]