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Drupady [299]
3 years ago
14

DNA may coil and condense into visible structures called

Biology
1 answer:
arsen [322]3 years ago
7 0

Answer:

Chromatin

Explanation:

Chromosomes are packaged by histone proteins into a condensed structure called chromatin.

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What molecule directly supplies the energy required for this transport?
kozerog [31]
Adenosine triphosphate
7 0
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
Which is not a component of the plasma membrane?
ipn [44]

Answer:

nucleic acid is not a component of the plasma membrane

Explanation:

Nucleic acid is a type of complex organic substance that is found in living cells and essential to all known forms of life.

6 0
3 years ago
Are all living organisms made from different combinations of only______amino acids
Tomtit [17]
That easy..............<span>21 one is your technical answer according to todays rules but scientist used to think it was only 20 so 20 would be your answer</span>
8 0
3 years ago
13.<br> A glucose<br> B carbon dioxide<br> C oxygen<br> D DNA
olga nikolaevna [1]

Answer:

B carbon dioxide

Explanation:

the process uses oxygen and produces carbon dioxide as a waste product.

5 0
2 years ago
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