Chapter 11, Problem 23A

Summary Introduction

To analyze:

A micrograph of stained chromosomes.

Introduction:

Micrograph: It is a digital image or photograph of any specimen taken through a microscope to get a magnified image.

Chromosome: It is the thread-like structure made up of protein and DNA, which is present in the nucleus of the cell.

Explanation of Solution

A micrograph of stained chromosomes is called Karyotype, where pairs of homologous chromosomes are arranged in decreasing size.

A karyotype test is done to know the size, shape, and number of chromosomes in any organism.

Karyotypes are prepared from mitotic cells.

Conclusion

The karyotype of humans has 23pairs of chromosomes with 22 pairs of homologous chromosomes and one pair of nonmatching sex chromosomes.