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This film is the first of a two part series on the evolution of new genetic information. Here we focus on Point Mutations - the simplest natural mechanisms known to increase the genetic information of a population.
Our second film of the series will focus on duplication events - natural mutations that increase the total amount of genetic information of an individual.
This film was produced under the guidance of molecular biologist Dr. Nicholas Casewell. http://www.lstmed.ac.uk/about/people/dr-nicholas-casewell
Point mutations are small, natural edits in the DNA code of an individual. These edits can be passed from parent to child. Because they are mere edits, point mutations usually do not increase the total amount of information in an individual. As new information is gained, old information is lost. Point mutations do, however, increase the total amount of information within a population.
In this film you will see several examples of beneficial point mutations which have enhanced a creatures abilities or even given rise to entirely new abilities. The first two examples were directly observed in bacteria by scientists in the lab. The third is a case found in domestic dogs, the last example was discovered in several species of wild animal.
Details about mutation examples in this film, along with links to the journals cited can be found at
http://statedclearly.com/videos/how-does-new-genetic-information-evolve-part-1-point-mutations
This film is the first of a two part series on the evolution of new genetic information. Here we focus on Point Mutations - the simplest natural mechanisms known to increase the genetic information of a population.
Our second film of the series will focus on duplication events - natural mutations that increase the total amount of genetic information of an individual.
This film was produced under the guidance of molecular biologist Dr. Nicholas Casewell. http://www.lstmed.ac.uk/about/people/dr-nicholas-casewell
Point mutations are small, natural edits in the DNA code of an individual. These edits can be passed from parent to child. Because they are mere edits, point mutations usually do not increase the total amount of information in an individual. As new information is gained, old information is lost. Point mutations do, however, increase the total amount of information within a population.
In this film you will see several examples of beneficial point mutations which have enhanced a creatures abilities or even given rise to entirely new abilities. The first two examples were directly observed in bacteria by scientists in the lab. The third is a case found in domestic dogs, the last example was discovered in several species of wild animal.
Details about mutation examples in this film, along with links to the journals cited can be found at
http://statedclearly.com/videos/how-does-new-genetic-information-evolve-part-1-point-mutations
Año publicación: 2019
Video
Descripción
Part 1: How does new genetic information evolve? Point mutations
Clasificaciones
Formato
Video
Cursos / Niveles
1° Medio
Asignaturas / Ambitos
Ciencias Naturales
Eje
Biología
OA
Objetivo de aprendizaje CN1M OA 02
Licenciamiento
Licencia Youtube
Objetivos de aprendizaje del recurso
Objetivo de aprendizaje CN1M OA 02Basal CN1M OA 02
Analizar e interpretar datos para proveer de evidencias que apoyen que la diversidad de organismos es el resultado de la evolución, considerando:
- Evidencias de la evolución (como el registro fósil, las estructuras anatómicas homólogas, la embriología y las secuencias de ADN).
- Los postulados de la teoría de la selección natural.
- Los aportes de científicos como Darwin y Wallace a las teorías evolutivas.
