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Kay [80]
2 years ago
5

6. Air sacs in the lungs through which oxy-

Biology
1 answer:
Mama L [17]2 years ago
6 0

Answer: Alveoli

Explanation: Alveoli is the air sacs in the lungs through which oxygen and carbon dioxide diffuse into and out of the blood.

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Which activity is most likely a result of a sudden, unexpected hangs in the environment? A. a dog mating to produce offspring B.
cupoosta [38]
It would probably be .D. Plankton populations decreasing.
8 0
3 years ago
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
Mendel also wondered if the inheritance of one trait affected the inheritance
svet-max [94.6K]

Answer:

A. dihybrid crosses

Explanation:

A dihybrid cross can be defined as a mating experiment between two lines/varieties/organisms that differ in two phenotypic traits. By using pea plants, Mendel performed dihybrid crosses in order to analyze the mode of inheritance of both phenotypic traits at the same time. From these mating experiments, Mendel observed that the inheritance factors (nowadays called genes) sorted independently from one another in the next generation, which is called the principle/law of Independent Assortment.

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2 years ago
Yeast cells reproduce quickly by budding. This is a form of ___________ reproduction so all the yeast cells ____________.
almond37 [142]
C) asexual and are identical
7 0
2 years ago
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Tiktaalik had a combination of fishlike and tetrapod-like characteristics. which were the tetrapod-like characteristics?
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Tiktaalik fossils an energizing disclosure for researchers considering tetrapod development since they have a generally measure up to a blend of fishlike and tetrapod-like qualities. I hope the answer will help you. 
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