Related Experiment Video
Updated: Jul 19, 2025

08:41
Quantifying Abdominal Pigmentation in Drosophila melanogaster
Published on: June 1, 2017
9.0K
New molecular insights into butterfly pigmentation
Marcus R Kronforst1, Sofia I Sheikh1
1Department of Ecology & Evolution, The University of Chicago, Chicago, IL 60637, USA.
Cell Reports
|August 18, 2023
Summary
Two studies reveal the genetic, molecular, and biochemical underpinnings of butterfly wing coloration. These findings offer crucial insights into the evolution of phenotypic traits in animals.
Area of Science:
- Evolutionary Biology
- Genetics
- Biochemistry
Background:
- Butterfly wing pigmentation is a complex trait with significant evolutionary implications.
- Understanding the genetic and molecular basis of this trait is key to deciphering evolutionary processes.
Purpose of the Study:
- To elucidate the genetic, molecular, morphological, and biochemical mechanisms driving butterfly wing coloration.
- To provide a comprehensive understanding of the mechanistic basis of a key phenotypic trait.
Main Methods:
- Utilized distinct research approaches to investigate wing pigmentation.
- Focused on genetic, molecular, morphological, and biochemical analyses.
Main Results:
- Detailed mechanistic insights into butterfly wing color production.
- Identified key genetic and biochemical pathways involved.
Conclusions:
- The findings collectively advance our understanding of phenotype evolution.
- These studies highlight the intricate interplay of factors contributing to evolutionary adaptation.
Related Concept Videos
Epistasis
47.0K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
47.0K
Pigmentation
2.5K
The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
2.5K
Background and Environment Affect Phenotype
6.6K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.6K
Position-effect Variegation
6.4K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.4K
Epistasis Analysis
5.1K
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
5.1K

