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Viktor [21]
3 years ago
9

Which of the following is a common source of groundwater pollution? Oil dumping and oil spills Dumping paper and plastics into a

river Landfills containing chemicals that drain into the soil Storm-drainage pipes carrying water with high levels of sediment
Biology
2 answers:
Svetllana [295]3 years ago
4 0

Landfills containing chemicals that drain into the soil

nika2105 [10]3 years ago
3 0
Landfills containing chemicals that drain into the soil

Hope this helps :)
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Verdadero o falso mediante el genotipo podemos determinar si existen dominancia en una característica
Murljashka [212]

Answer:

Verdadero

Explanation:

Sabemos que los caracteres dependen de los genes. Y los genes pueden presentarse en forma de alelos dominantes, o alelos recesivos. La expresión de los alelos recesivos son enmascarados o escondidos por el alelo dominante. Es decir, que si ambos alelos se encuentran juntos en un heterocigota, solo el alelo dominante se expresará.

Entonces el alelo dominante expresa la característica que resulta dominante, mientras que el alelo recesivo expresa la característica recesiva.

Genotipo:

  • Homocigota dominante ----> Expresa caracter dominante (Solo el alelo dominante esta presente)
  • Heterocigota -------------------> Expresa el caracter dominante (Ambos alelos estan presentes, pero el dominante es quien se expresa)
  • Homocigota recesivo --------> Expresa el caracter recesivo (solo alelos recesivos estan presentes)

Por ejemplo, si tenemos dos fenotipos rojo y amarillo, y sabemos que el color esta codificado por un gen dialelico llamado M. También supongamos que no sabemos qué alelo expresa qué color. Teniendo solo estos datos, no podemos decir si el rojo es el color dominante o si el amarillo lo es.

Sin embargo, si tenemos los siguientes genotipos acompañando esta información:

  • MM--> Amarillo
  • Mm--> Amarillo
  • mm --> Rojo

Recién ahora podemos deducir que el caracter dominante es el amarillo.

8 0
3 years ago
Beneficial bacteria are found in our digestive tract
Eduardwww [97]

Answer:

A

Explanation:

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8 0
3 years ago
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Which best describes the structure of a DNA molecule?
SOVA2 [1]

Answer:

A

Explanation:

the best choose is A..........

6 0
2 years ago
The result of the Hershey-Chase experiment was that radioactivity could be detected inside the bacterial cells when they were in
ehidna [41]

Answer:

i belive that it is option a

Explanation:

6 0
2 years ago
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Novay_Z [31]

The intensity of light had greater impact on the rate of photosynthesis. It was observed that the jar in which the intensity of light was high, large amount of oxygen was produced as compared to the jar in which the intensity of light was low.  

In the process of photosynthesis, oxygen is produced from the carbon dioxide. As the oxygen in the jar increases, the leaf disk rises with in the jar which also signifies the higher oxygen production with higher rate of photosynthesis in presence of high intensity of light.  

7 0
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