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Related Concept Videos

Karyotyping

Karyotyping

Karyotyping

Karyotyping

Polytene Chromosomes

Polytene Chromosomes

Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also...

Polytene Chromosomes

Polytene Chromosomes

Southern Blot

Southern Blot

Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...

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Related Experiment Video

Updated: Apr 21, 2026

Chromosome Preparation From Cultured Cells

Chromosome Preparation From Cultured Cells

Published on: January 28, 2014

Peripatetic southern cytogenetics

Patricia N Howard-Peebles¹

¹Howard-Peebles Consulting, Fair View, Texas, USA.

Genetics in Medicine : Official Journal of the American College of Medical Genetics

|October 31, 2014

Summary

No abstract available in PubMed .

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