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Mazyrski [523]
3 years ago
9

What is the name for the amount of energy that a reaction needs to get started?

Biology
1 answer:
Elenna [48]3 years ago
7 0
Activation energy ........
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Si se aparean especies diferentes como por ejemplo el cruce entre caballos y burros; podemos afirmar que si llegan a tener desce
White raven [17]

Answer:

El híbrido va a ser esteril.

Explanation:

En la cruza entre dos especies distintas, cuando ocurre, existen distintos mecanismos de aislamiento reproductivo, que son barreras que inhiben o interrumpen el flujo génico entre especies distintas. Es decir que no habrá exito reproductivo de estas cruzas. Se trata de caracteres biológicos propios de cada especie que previenen la reproducción con otras especies.

Estos mecanismos de aislamiento reproductivo pueden ser precigóticos o postcigóticos.  

  1.Pre-copulatorios o pre-cigóticos:

  • Ecológico o por aislamiento de hábitat;
  • Estacional o temporal;
  • Sexual o etológico;
  • Mecánico;
  • Por incompatibilidad de gametas.  

  2. Post-copulatorios o cigóticos:

  • Inviabilidad del híbrido;
  • Esterilidad del híbrido;
  • Híbrido con viabilidad o fertilidad disminuido;
  • Interacciones citoplasmáticas.

La mula es producto de la cruza entre dos especies distintas: una yegua (Equus ferus caballus) y un burro (Equus africanus asinus). Es un ejemplo de la accion de mecanismo poscigótico, en el cual se forma un híbrido viable esteril. Este ejemplar puede nacer, crecer y sobrevivir, pero que no puede producir gametas funcionales, por lo cual no puede reproducirse.  

7 0
2 years ago
Plant and animal cells have which organelle in
Strike441 [17]

Answer:

cell membrane

Explanation:

i took this class last year

7 0
3 years ago
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Creatine phosphate functions in the muscle cell by ________. creatine phosphate functions in the muscle cell by ________. storin
brilliants [131]
Am certain that Creatine phosphate functions in the muscle by storing energy that will be transferred to ADP to resynthesize ATP. All muscle cells have a little ATP within them that they can use immediately, however, only enough to last for about 3 seconds. Therefore, all muscle cells contain a high-energy compound called creatine phosphate which is broken down to make more ATP quickly. 
8 0
3 years ago
A cross of 2 ♂♀unknown plants produces offspring where three-fourths (¾) have axial flowers and one-fourth (¼) have terminal flo
navik [9.2K]

Complete question:  

A cross of 2 ♂♀unknown plants produces offspring where three-fourths (¾) have axial flowers and one-fourth (¼) have terminal flowers. What are the genotypes of the parent plants?

Answer:

Both parent plants are heterozygous for the trait. Their genotype is Aa.

Explanation:

Due to technical porblems, you will find the complete explanation in the attached files

Download pdf
8 0
2 years ago
Which phenomenon leads to the formation of metamorphic rocks?
Alexus [3.1K]
The correct answer among the choices is C. heat and pressure. This is the phenomenon that leads to the formation of metamorphic rocks. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help. 
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2 years ago
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