Question

which of the following methods is a means to find the number and structure of a persons chromosomes? karyotype analysis pedigree analysis punnett square analysis phenotypic ratio analysis

Explanation:

Karyotype analysis involves arranging and examining chromosomes to determine their number and structure. Pedigree analysis studies family inheritance patterns, Punnett square analysis predicts genetic crosses' outcomes, and phenotypic ratio analysis looks at observable trait ratios. Only karyotype analysis focuses on chromosome number and structure.

Answer:

A. karyotype analysis