The graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross is called a) Pedigree analysis b) Karyotype c) Punnett square d) Chromosome map

Options

A. Pedigree analysis
B. Karyotype
C. Punnett square
D. Chromosome map

Answer

To solve the question, "The graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross is called," we will analyze the options provided and identify the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a graphical representation used to calculate the probabilities of genotypes in offspring resulting from a genetic cross.

2. **Analyzing the Options**:
- **a) Pedigree analysis**: This is a diagram that shows the occurrence of a genetic trait across generations in a family. It does not calculate probabilities of offspring genotypes.
- **b) Karyotype**: This is a visual representation of an individual's chromosomes, used to diagnose chromosomal abnormalities. It does not relate to calculating genotype probabilities.
- **c) Punnett square**: This is a diagram that predicts the genotypes of offspring from a genetic cross by combining the gametes of the parents. It is specifically designed for this purpose.
- **d) Chromosome map**: This represents the arrangement of genes on chromosomes but does not calculate probabilities of offspring genotypes.

3. **Identifying the Correct Answer**: Based on the analysis, the only option that fits the description of a graphical representation used to calculate the probability of all possible genotypes of offspring is **c) Punnett square**.

4. **Conclusion**: Therefore, the correct answer is **c) Punnett square**.