1. Who coined the term chromosome?
Ø Waldeyer (1888) was the man who coined term chromosome.
2. What is meant by Ploidy?
Ø The total number of chromosomes present in cell of an organism is called Ploidy.
3. What are the symbols for haploid and diploid?
Ø Symbol for haploid is X or n and symbol for diploid is 2X or 2n.
Ø What is the difference between centromere and chromomere?
Centromere is the primary constriction where as chromomere refers to bead like structures on the chromosome.
5. What is meant by arm ratio in a chromosome?
Ø The ratio of length between the long arm and short arm in chromosome is said to be the arm ratio.
6. Name different types of aneuploidy?
Ø These are monosomy, nullisomy, trisomy and tetrasomy.