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Feliz [49]
3 years ago
8

The removal of genetic variation from a population is called?

Biology
1 answer:
scoray [572]3 years ago
3 0
———->>>>> Genetic drift
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Asi todas las células son muy pequeñas. ¿Qué limitaciones físicas y metabólicas determinan el tamaño celular? ¿ A qué problemas
N76 [4]

Answer:

- Limitación física: la relación superficie volumen es baja para un intercambio eficiente de sustancias con el medio

- Limitación metabólica: en principio no existen limitaciones metabólicas  

Explanation:

La membrana celular es una estructura fundamental para el funcionamiento celular, ya que de la membrana celular depende el intercambio de nutrientes y desechos por parte de la célula con su entorno (medio extracelular). En células muy grandes la relación entre la superficie cubierta por la membrana y el volumen celular es muy baja, lo cual dificulta el intercambio de compuestos (tanto nutrientes como desechos) con el medio extracelular. Por otro lado, los mecanismos metabólicos en principio no deberían verse afectados por el tamaño celular. Por ejemplo, los perfiles metabólicos de expresión génica son independientes del tamaño celular y están adaptados a diferentes tipos celulares, desde una célula huevo que es proporcionalmente varias veces más grande que un célula diferenciada la cual sin embargo no ha perdido la capacidad de dividirse, un ejemplo de esto son las células cancerosas derivadas de células epidérmicas diferenciadas las cuales poseen la capacidad de dividirse y de proliferar indiscriminadamente.

5 0
3 years ago
What is the major way in which local farms help reduce greenhouse gas emissions?
Andrews [41]

Answer:

A

Explanation:

Less pollution means less greenhouse gasses being emitted.

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3 years ago
Explain where the enzymes for electron transport are located in bacteria (prokaryotes) if they don't have internal membranes, an
slega [8]
To clean/protect themselves which results in that
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The passage through the capillary walls because of positive intravascular pressure is termed:
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I think is termed: Pressure filtration. 
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Chordae tendineae are found in the A. auricles. B. ventricles. C. atria. D. aorta.
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3 years ago
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