Genetic constitution of an individual is represented by :-

Options

A. Genome
B. Genotype
C. Phenotype
D. Karyotype

Answer

To determine the genetic constitution of an individual, we need to analyze the given options:

1. **Karyotype**: This refers to the number and appearance of chromosomes in the nucleus of a eukaryotic cell. It does not specifically represent the genetic constitution of an individual but rather the chromosomal structure.

2. **Phenotype**: This is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences. While it reflects traits, it does not represent the genetic constitution itself.

3. **Genotype**: This term refers to the genetic makeup of an individual, specifically the alleles present at specific loci on the chromosomes. The genotype directly represents the genetic constitution of an individual.

4. **Genome**: This term refers to the complete set of genes or genetic material present in a cell or organism. While it encompasses the entire genetic information, the term "genotype" is more specific to the genetic constitution of an individual.

Based on this analysis, the correct answer is **genotype**, as it specifically denotes the genetic constitution of an individual.

### Final Answer:
The genetic constitution of an individual is represented by: **Genotype**.