Answer:
plasma membrane
Explanation:
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Answer: knowing that the number of adenine will be always equal to the number of thymine.
Explanation:On the basis of base pairing rule, the purine bases bonds with the pyrimidine bases. This takes place as the configurations of pyrimidine and purine bases permit formation of hydrogen bonding between the two.
The base pairing rule suggests that the pairing of adenine takes place only with thymine and pairing of guanine takes place only with cytosine. Two hydrogen bonds are produced between an adenine and thymine base pair, while three hydrogen bonds are produced between a guanine and cytosine base pair.
Answer:
Genetic drift
Explanation:
Genetic drifts is a change in the frequencies of alleles due to chance or at random. Therefore there is no environmental or survival influences.
There are two types. The founders effect caused when a small group migrates from a larger group and forms a new population causing a change in the genetic pool.
Bottleneck effect is caused by the sudden reduction of population due to environmental or human activities.
The observed genetic changes in the question were due to genetic drift.
Explanation:
Pangea
Pangea is the belief that all continents were all connected at one time
Meteoroids are incredibly tiny, stony bodies that revolve around the sun. As with planets, asteroids, and comets, rocks or iron chunks called meteoroids orbit the sun.
As a meteoroid enters the atmosphere, friction warms it up, producing a brilliant trail of hot ionized gases (plasma) known as a meteor. If the item survives both its entry into the atmosphere and its landing on the ground, it is referred to as a meteorite. Asteroid pieces make up more than 99 percent of meteorites. A tiny group is known to have come from the moon, and another group is widely believed to have originated on Mars. Although it hasn't been proven conclusively, there is also grounds to think that some are pieces of comets rocky debris.
Learn more about Meteoroids
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