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dybincka [34]
3 years ago
12

What is an endotherm? how do sweating, fur, and feathers affect the body temperatures of endotherms?

Biology
1 answer:
Anton [14]3 years ago
7 0
<span>1. What is an endotherm?
Endotherm is an animal that keeps their temperature constant in a certain range. Keeping temperature is important because most enzyme has an optimal working range. By keeping the temperature at optimal range for the enzyme, the organism can do metabolism more efficient.


2. how do sweating, fur, and feathers affect the body temperatures of endotherms?
The environments temperature should influence the temperature of an organism that lives within it. </span>Endotherms need to control their temperature, so they have some mechanism to increase/decrease the body temperature. or to insulate themselves from the environment.
Sweating help decreasing temperature makes the organism can withstand hot environment. Fur and feather will insulate the body, makes the organism more resistant to cold.<span>

</span>
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En una isla oceánica aislada hay una especie de pájaros, la
Zinaida [17]

Answer:

La frecuencia del alelo recesivo s es igual a 0.2 (opción b)

Explanation:

<u>Datos disponibles</u>:

  • Plumaje gris es el fenotipo dominante
  • Plumaje con manchas blancas es el fenotipo recesivo
  • S es el alelo dominante para plumaje gris
  • s es el alelo recesivo para plumaje manchado
  • Variedad manchada representa el 4% de la población.

Si ejemplares con ala manchada y genotipo ss representan el 4% de la población, entonces los restantes 96% corresponden a ejemplares grises homocigotas dominantes SS y heterocigotas Ss. Las frecuencias fenotípicas serán:

  • Plumaje gris (SS + Ss) = 96% = 0.96
  • Plumaje manchado (ss) = 4% = 0.04

De acuerdo al equilibrio de Hardy-Winberg, la suma de las frecuencias alélicas equivale a 1, y la suma de las frecuencias genotípicas también equivale a 1.

  • Frecuencia del alelo dominante = p
  • Frecuencia del alelo recesivo = q
  • Frecuencia de genotipo homocigota dominante = p²
  • Frecuencia de genotipo heterocigota = 2xpxq
  • Frecuencia del genotipo homocigota recesivo = q²

Entonces,

  • p + q = 1
  • p² + 2pq + q² = 1

Si la frecuencia genotípica del homocigota recesivo es 0.04, entonces la raíz cuadrada de ese valor es la frecuencia génica del alelo recesivo. Esto es:

  • q² = 0.04
  • q = √0.04 = 0.2

A partir de la ecuación p + q = 1, podemos calcular el valor de p.

p + q = 1

p + 0.2 = 1

p = 1 - 0.2

p = 0.8

Entonces la frecuencia genotípica del homocigota dominante es p²

p² = 0.8² = 0.64

Y la frecuencia genotípica del heterocigota es

2pq = 2 x p x q = 2 x 0.8 x 0.2 = 0.32

Para corroborar esto, la suma de todas las frecuencias genotípicas debe dar uno.

0.64 + 0.32 + 0.04 = 1

5 0
3 years ago
There are an estimated 20,000-25,000 human protein-coding genes. If they are all sorted, which algorithm would you use to find a
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Answer:

The correct answer is : option A.

Explanation:

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Thus, the correct answer is : option A.

8 0
3 years ago
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