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3 years ago

why is it said that natural selection acts on phenotypes rather than on the genetic material of an organism?

1 answer:

4 0

It is said because it doesn't change the genetic material, but the outside of the animal when the species slowly adapts to it's surroundings and predators.

Example: A group of 10 birds are in a forest. One of the birds has a short, stubby beak, and another 3 have long, thin ones. The rest of them are normal. If the only food left after a natural disaster was flower nectar, then the 3 with the long, thin beaks would survive, and the other birds, poorly adapted for this outcome, would not live.

It doesn't actually change the genetic makeup of an organism but may slowly alter it's entire gene pool over time.

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Desmosomes form channels that allow each cardiocyte to electrically stimulate its neighbors. True False

dimulka [17.4K]

Answer:

False

Explanation:

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3 years ago

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ivolga24 [154]

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3 years ago

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Dvinal [7]

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2 years ago

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djyliett [7]

Answer:

1.) True

2.)true

3 false

4 true

5 true

6 false

Explanation:

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2 years ago

What is one effect of methane gas being released into Earth’s atmosphere? *

bogdanovich [222]

Answer:

An increase in the amount of greenhouse gases in the atmosphere

Liquid; gas

Lacking oxygen

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Explanation:

1. Methane is one of the greenhouse gases. When these gases are released into the atmosphere, they increase the temperature of the earth surface because they trap heat within the earth. Other examples are carbon dioxide and water vapor.

2. Evaporation is a phase change from liquid to gas. During this process, heat is supplied to a liquid. When the molecules of the liquid gain enough energy, they then begin to break off into gaseous form. The reverse process of evaporation is condensation.

3. Anaerobic is a process that lacks oxygen. Aerobic processes are carried out with the availability of oxygen.

4. The reason why compost should be regularly mixed is to decrease the temperature in the compost pile. Portions of the compost can have a higher temperature than other parts. Therefore, mixing the compost will help to redistribute the heat in the compost.

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2 years ago

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