Meselson–Stahl experiment proved that DNA replication is a semiconservative process, feeding E. colo bacteria with different types of Nitrogen isotopes (N14 and N15).

Changing the type of radioactive compound in different times of bacteria grow, they could observe that both of the isotopes were present on the bacteria culture.

Basically, if the bacteria present both of them, the DNA was replicated semiconcervely.

Guess what? they show both! (See the image for more information)

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3 years ago

What are four Main parts of the skeletal system

rosijanka [135]

Answer:

bones, ligaments, tendons, and joints.

Explanation:

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3 years ago

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How are directional selection and disruptive selection similar? how are they different?

Irina18 [472]

The similarity between directional and disruptive is that both are types of selection on polygenic traits in which the curve shift away from the middle.

The different between disruptive and directional is in disruptive move toward both ends . And in directional, the curve shift toward one end.

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3 years ago