Question

The term factor for a gene was coined by
A. William Batterson
B. Johann Mendel
C. Johannsen
D. F. Griffith

Answer 1

Hint: The fundamental, physical as well as functional unit of heredity is a gene. A gene is a DNA or RNA nucleotide sequence that encrypts the formation of either RNA or protein gene products. The DNA is copied into RNA first during gene expression. The RNA may be directly functional or the intermediate model for a function-performing protein.

Complete answer: In the year 1090, the Danish botanist ‘Wilhelm Johannsen’ coined the term 'gene'. 'Gene' is pronounced in Danish and German as 'gen'. In order to define the basic physical and functional units of heredity, genes have been coined. Wilhelm Johannsen was born in Copenhagen. In his book, he first introduced the word ‘gene’. It has been derived from the Greek word 'genos,' which means birth, and thus, the word 'gene' was suggested. The words ‘genotype’ and ‘phenotype’ were also coined later by Johannsen. He is well known for his genetic "pure line" experiments in 1903. He researched plants and helped to develop the field of genetics, methods for contributing and principles of heredity.
The Dutch botanist Hugo de Vries' mutation hypothesis has been strongly backed by his studies on plant heredity. A gene is a DNA or RNA nucleotide sequence encoding the synthesis of a gene product, either RNA or protein. Genes provide the information required to build and sustain cells.
So, option C is the right answer.

Note: The term 'genetics' was derived from the word 'gene' by William Bateson in 1905. He was an early geneticist and supporter of the theories of Mendel. Wilhelm Johannsen later proposed that genes should be called the Mendelian factors of inheritance.