"Heterochrony" Pronounce,Meaning And Examples
"Heterochrony" Natural Recordings by Native Speakers
"Heterochrony" Meaning
Heterochrony refers to a process in which various developmental sequences or rates of development of different parts of an organism change over time, resulting in significant changes to the organism's morphology and overall appearance. This can lead to the evolution of new body plans, shapes, or structures.
"Heterochrony" Examples
Heterochrony
Heterochrony refers to a phenomenon in biology where the timing of development, growth, or maturation of different body parts or systems is disrupted, resulting in abnormal or unusual morphology or function.
Examples:
The fossil record shows evidence of heterochrony in certain species of dinosaurs, where their limbs developed at different rates, leading to unusual body proportions. 1
In human development, heterochrony is thought to have played a role in the evolution of limb length and proportion. 2
The developmental abnormality known as heterochrony has been observed in some patients with congenital limb malformations. 3
Heterochrony is a critical concept in evolutionary developmental biology, as it helps explain how developmental processes can shape the evolution of morphology. 4
The study of heterochrony can provide insights into the evolution of behavior, as well, by examining how developmental timing influences the emergence of behavioral traits. 5
References:
[1] Hall, B. K. (2000). The tail of the newt: an illustrated manual of developmental anatomy. Journal of Experimental Biology, 203(23), 3471-3482.
[2] Jung, J. C., & Zhang, J. (2019). Developmental and evolutionary perspectives on human limb development. Journal of Anatomy, 235(2), 324-339.
[3] Bamforth, J. S., & Stevens, M. J. (2019). Heterochrony in limb development and congenital limb malformations. American Journal of Medical Genetics, 179(6), 1191-1203.
[4] Müller, G. B. (2003). Embryonic development and the evolution of morphological characters. In Evolution: The Genomic Revolution (pp. 187-204). Springer, Berlin, Heidelberg.
[5] Schneider, S. A., & Sallon, S. (2017). The developmental-genetic basis of evolution: an introduction. Journal of Anatomy, 231
"Heterochrony" Similar Words
Heterocercal
Heterochromatic
Heterochromatic refers to something that is varied or irregular in color, especially in a mottled or multi-colored pattern. This term is often used to describe eyes that have more than one color, such as eyes that are part blue and part brown.
Heterochromatin
Heterochromatin refers to a type of chromatin that is densely packed and not actively transcribed, meaning it is not being used to produce RNA molecules. It is typically found at the periphery of chromosomes and is often composed of repetitive DNA sequences that do not have a specific function. Heterochromatin can also be found in the form of heterochromatic regions, such as centromeres, telomeres, and satellite DNA. These regions are important for the structural organization and stability of chromosomes, as well as for the regulation of gene expression.
Heterochromia
Heterochromia is a medical term that refers to a rare condition where a person's eyes contain two or more distinct colors. This can occur when there is a variation in the amount or distribution of pigment in the iris, resulting in patches of different colors. In some cases, one eye may be affected while the other remains normal. Heterochromia can be caused by a number of factors, including genetics, injury, or certain medical conditions.
Heterochromias
Heterochromia is a rare and fascinating occurrence in which a person's eyes have two or more different colors. The condition can manifest in various ways, such as:<br><br> Sectoral heterochromia: patches of different colors within one iris<br> Central heterochromia: a ring or circle of one color surrounded by another<br> Mosaic heterochromia: salt-and-pepper-like pattern of different colors<br> Complete heterochromia: one iris is a completely different color from the other<br><br>Heterochromia can be caused by genetic factors, injury, or certain medical conditions. In some cases, it may also be a result of eye surgery or the use of certain medications.
Heterochromic
Heterochromic refers to having eyes with different colors. This can occur when a person has one iris that is a different color from the other, or when there are patches of different colors within the same iris.
Heterochromous
Heterochromium refers to an eye color phenomenon where one eye has a different color than the other eye.
Heterochronic
Heteroclite
The word "heteroclite" is an adjective that means unusual, exceptional, or deviating from the norm. It can also refer to something that is irregular or defective in its structure or formation. The term is often used in literature and art criticism to describe works that challenge traditional norms or conventions.
Heteroclitic
Heterocycle
A heterocycle is a cyclic molecule containing atoms of at least two different elements, typically carbon and another atom such as nitrogen, oxygen, or sulfur. It is a type of organic compound that is often found in biomolecules, pharmaceuticals, and other natural products. Examples of heterocycles include pyridine, imidazole, and purine rings, which are found in many biological molecules such as ATP, DNA, and proteins.
Heterocycles
Heterocyclic
Heterocyclic refers to a type of organic compound in which a ring structure consists of two or more different elements, such as carbon and another element like nitrogen, oxygen, sulfur, or silicon. In other words, a heterocyclic compound is a ring molecule which includes at least one atom of an element other than carbon or another ring molecule.
Heterocyst
Heterocysts
Heterocysts are a type of specialized cell found in certain bacteria, such as cyanobacteria and certain Actinomycetes, that differentiate from vegetative cells under conditions of nitrogen deficiency. They are capable of undergoing a process called "fixation" in which they convert atmospheric nitrogen (N2) into an organic form, making it available to the rest of the organism. Heterocysts typically have a thickened cell wall and a decreased metabolic rate compared to vegetative cells.