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Fiesta28 [93]
3 years ago
6

Many Learners Perform Well In Grade 12 But still not accepted into Universities.Explain Two Reasons For This​

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0

Answer:

1. Confusion

2. Financial issue

Explanation:

1. The reason I say this is that many of them are not really sure about what they want they want to do in their later future making them a little confused on what to do.

2. It is a common issue which has taken away so many bright minds away from their future in helping the world and their individual community to prosper in different ways.

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The functions of which cell structure are described in this list?
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Answer:

Hey!

Wait... which list?

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3 years ago
Describe the effect on a protein if one or more amino acids are changed
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The amino acids code for the protein. If one amino acid is changed then the whole protein is changed.
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3 years ago
Que tipo de aislamiento reproductivo exhibe la mula?
bulgar [2K]

Answer:

<em>Aislamiento postreproductivo: Esterilidad del híbrido</em>

Explanation:

El concepto biológico de <u>especie</u>, en su definición, destaca que los ejemplares de una especie no pueden entrecruzarse con ejemplares de otra especie distinta, o bien, en caso de hacerlo, no hay éxito reproductivo.

Existen distintos mecanismos de aislamiento reproductivo, que son barreras que inhiben o interrumpen el flujo génico entre especies distintas. 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 (<em>Equus ferus caballus</em>) y un burro (<em>Equus africanus asinus</em>). 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 pueden producir gametas funcionales, por lo cual no pueden reproducirse.        

4 0
3 years ago
PLEASE HELP!! BIOLOGY
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C) the changes reflect...
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3 years ago
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SCORPION-xisa [38]
I am pretty sure Osmosis sorry if Im wrong

4 0
3 years ago
Read 2 more answers
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