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Related Experiment Video

Updated: Jul 12, 2026

Manipulation of Ploidy in Caenorhabditis elegans

Manipulation of Ploidy in Caenorhabditis elegans

Published on: March 15, 2018

Polyploidy and Environment in Arctic Alaska.

A W Johnson, J G Packer

Science (New York, N.Y.)

|April 9, 1965

Summary

Polyploidy in Alaskan angiosperms increases with latitude, correlating with environmental factors. This finding clarifies the global trend of polyploidy frequency across the Northern Hemisphere.

Area of Science:

Botany
Ecology
Genetics

Background:

Polyploidy, the state of having more than two sets of chromosomes, is a common phenomenon in flowering plants (angiosperms).
The geographical distribution of polyploidy, particularly its increasing frequency with latitude in the Northern Hemisphere, remains an area of ecological and evolutionary interest.

Purpose of the Study:

To investigate the correlation between polyploidy frequency and edaphic environmental gradients in northwestern Alaska.
To provide ecological and historical context for understanding latitudinal polyploidy patterns.

Main Methods:

Field surveys of angiosperm flora in the Ogotoruk Creek-Cape Thompson area.
Analysis of polyploidy occurrence in relation to local soil (edaphic) conditions.

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A High-Throughput In Situ Method for Estimation of Hepatocyte Nuclear Ploidy in Mice

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Last Updated: Jul 12, 2026

Manipulation of Ploidy in Caenorhabditis elegans

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Published on: March 15, 2018

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

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A High-Throughput In Situ Method for Estimation of Hepatocyte Nuclear Ploidy in Mice

A High-Throughput In Situ Method for Estimation of Hepatocyte Nuclear Ploidy in Mice

Published on: April 19, 2020

Main Results:

A significant correlation was found between the frequency of polyploidy in angiosperms and local edaphic environmental gradients.
The observed patterns support the hypothesis of increasing polyploidy with increasing latitude.

Conclusions:

Edaphic factors play a crucial role in shaping polyploidy distribution in arctic angiosperm flora.
The study contributes to clarifying the broader ecological and evolutionary mechanisms driving latitudinal gradients in polyploidy across the Northern Hemisphere.