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nydimaria [60]
3 years ago
13

explain how darwin's observations of finches in the galapagos islands supply evidence for the theory of natural selection?

Biology
1 answer:
Bond [772]3 years ago
8 0

Birds that ranged from different island of the Galapagos had different characterististic that depended on the climate they lived in.

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Answer:  B: When supply is greater than demand

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2 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;
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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
2 years ago
White spotting, or piebald trait, characterized by an absence of hair pigment in specific places, is caused by mutant copies of
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B. Gene. Piebalding is caused by mutant copies of genes.
6 0
3 years ago
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Enzymes speed chemical reactions by
masha68 [24]
A. Decreasing amount of energy needed to start a reaction.
8 0
3 years ago
You've calculated that the payback
ElenaW [278]

In the given situation, the payback period decreases as the electricity cost increases, i.e., option C is correct.

<h3>What is payback period?</h3>

The payback period is the amount of time required to recover the cost of an investment or to reach the breakeven point for an investor.

Shorter payback periods indicate more appealing investments, whereas longer payback periods indicate less desirable investments.

In the given situation, the payback period decreases as the electricity cost increases.

Thus, the correct option is C.

For more details regarding the payback period, visit:

brainly.com/question/13057308

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