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Related Concept Videos

The Ratio of X Chromosome to Autosomes02:45

The Ratio of X Chromosome to Autosomes

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In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
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Heterochromatin02:38

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The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at...
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Related Experiment Video

Updated: Dec 1, 2025

Dissection of Drosophila melanogaster Flight Muscles for Omics Approaches
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Molecular Lessons from the Drosophila Bithorax Complex.

Welcome W Bender1

  • 1Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, 02115 Massachusetts.

Genetics
|November 7, 2020
PubMed
Summary

Welcome W. Bender received the 2020 Edward Novitski Prize for his creative experiments. His work uncovered the molecular details and regulation of the bithorax gene complex in genetics.

Area of Science:

  • Genetics
  • Developmental Biology
  • Molecular Biology

Background:

  • The bithorax gene complex is crucial for segment identity in Drosophila development.
  • Understanding its molecular regulation is a long-standing challenge in genetics.

Observation:

  • Welcome W. Bender's research focused on the bithorax gene complex.
  • His experimental designs demonstrated exceptional creativity and intellectual ingenuity.

Findings:

  • Bender elucidated the molecular nature of the bithorax gene complex.
  • His work revealed the intricate regulatory mechanisms governing this complex.

Implications:

  • This research provides fundamental insights into gene regulation and developmental pathways.

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  • It serves as a model for dissecting complex genetic systems and their functions.