Related Experiment Video
Updated: Jan 31, 2026
09:27
Adaptation of Hybridization Capture of Chromatin-associated Proteins for Proteomics to Mammalian Cells
Published on: June 1, 2018
6.6K
Bracketing phenogenotypic limits of mammalian hybridization
Yoland Savriama1, Mia Valtonen1,2, Juhana I Kammonen3
1Developmental Biology Program, Institute of Biotechnology, University of Helsinki, PO Box 56, 00014 Helsinki, Finland.
Royal Society Open Science
|December 20, 2018
Summary
Mammalian hybridization can occur between phenotypically disparate species, even those with significant genetic distance. This study of grey and ringed seals reveals predictable hybrid morphology and wild introgression, suggesting broader potential for hybridization.
Area of Science:
- Paleontology
- Evolutionary Biology
- Genetics
Background:
- Genetic analyses increasingly reveal hybridization and introgression in mammalian species.
- Fossil identification relies on morphology when genetic material is absent, necessitating the study of intermediate forms.
- Cranio-dental fossils are crucial for mammalian paleontology and identifying hybrid specimens.
Purpose of the Study:
- To assess the potential for extreme mammalian hybridization by examining a grey and ringed seal hybrid.
- To analyze the genetic and morphological distinctiveness of grey and ringed seals.
- To determine the feasibility of identifying hybrids morphologically and investigate wild hybridization.
Main Methods:
- Comparative genetic analysis of grey and ringed seals.
- Morphological and developmental analysis of cranio-dental material from a captive hybrid.
- Genetic analysis of parent populations to detect wild introgression.
Main Results:
- The genetic distance between grey and ringed seals is substantial, exceeding the human-Neanderthal distance.
- Despite genetic distance, morphological analyses show the hybrid is a predictable intermediate between the disparate parent species.
- Genetic analysis of parent populations confirmed introgression in the wild, indicating hybridization extends beyond captivity.
Conclusions:
- Mammalian hybridization has a considerable potential even between phenotypically disparate taxa.
- Morphological analysis of cranio-dental fossils can identify hybrids from phenotypically extreme parent species.
- Hybridization and introgression are not limited to captive individuals and occur in wild populations.
More Related Videos
Related Concept Videos
02:27Limiting Reactant
70.0K
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in reality, the reactants are not always present in the stoichiometric amounts indicated by the balanced equation.
70.0K
02:29Hybrid Zones
21.9K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
21.9K
01:29The Number e as a Limit
85
The number e is a fundamental constant in calculus, playing a central role in describing continuous change, particularly exponential growth. It is most naturally defined through its relationship with the natural logarithm, which is the inverse of the exponential function with base e. This relationship allows e to be characterized using basic principles of differentiation rather than as an arbitrary numerical constant.A key property of the natural logarithm function, ln x, is that its derivative...
85
03:24Hybridization of Atomic Orbitals I
67.3K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
67.3K
03:35Hybridization of Atomic Orbitals II
49.0K
sp3d and sp3d 2 Hybridization
49.0K
01:23Types of Limits I
185
Limits are a key mathematical concept for understanding how functions behave as their input approaches specific values, particularly when the function is undefined. They help reveal trends and discontinuities by examining the values a function approaches rather than its actual value.One-sided limits focus on the direction from which a value is approached. When a function behaves differently depending on whether the input approaches from the left or the right, the two one-sided limits may not...
185