Who proposed the term 'Allelomorph'

Chromosomal theory of inheritance was proposed by

Nicotiana sylvestris flowers only during long days and $N$.tabacum flowers only during short days, if raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross fertilized to produce self-fertile offspring. What is the best reason for considering $N .$ sylvestris and $N$. tobaccum to be separate species?

The stored blood must be free from

The following diagram shows two chromosomes and the lettered number represents the genes

chromosome $1$ : 

chromosomes $2$ :

Which of the following would result if a translocation occurred between chromosome $1$ and $2 ?$