Answer: Option 1) and 2) are correctly matched.
3) Trait- a genetic characteristic of the individual
4) Chromosome- thread-like molecule in the nucleus composed of DNA.
Trait is a morphological form or characteristic of an individual that is determined by gene ( segment of DNA that codes for protein that inturns determine a particular trait).
Chromosome is a thread like structure that is made up of DNA ( deoxyribonucleic acid) and carries genetic information in the form of genes.
Allele is an alternative form of a particular gene ( like t for dwarf and T fro tall plant)
