What is a fossil?
Fossils are fossilised (petrified) remains of animals/plants. A fossil though, is only a fossil, when it is from a different geological era.
How does that relate to evolution?
Evolution and fossils are very related. When we scan the DNA of different fossils, we find that the DNA can be similar to living species we have today, which helps us trace back their origins.
Tracing back a species origins is not something we do just to see how that species changed along time. When we manage to make an evolutionary chart of a species, we know how they changed, what they changed, and maybe not more, but very importantly, when the previous species were extinguished. If we know when they were extinguished, we can find out what caused that extinction:
- A lack of adaptation.
- Lack of resources.
- Temperature changes.
- Increase of predators.
- Deadly migrations.
- Other natural disasters.
So, in other words, by studying one species, we can study our own planet.
Hope it helped,
BioTeacher101
Answer:
They used radioactive labeling techniques to build two different types of phage.
Explanation:
In 1952, a set of experiments were carried out by American biochemists Alfred D. Hershey (1908-1997) and Martha Chase. They prepared two separate virus samples, one contained DNA labeled with a radioactive isotope and the other contained protein labeled with a different radioactive isotope. They grew the two types of viruses separately, infected bacteria with the two sets of phages and analyzed the bacteria for radioactivity. From the results obtained, Hershey and Chase concluded that the viral genetic material was DNA and not protein, reinforcing the observations previously made by Avery.
Answer:
Endothermic since it takes place in the glowstick :)
They're two types of variables, one being the responding the other being the controlled.
1-The controlled would be the light since the scientist would manipulate how much light the earthworm is given.
2- The responding would be the earthworm activity since it is reacting to the amount of light on it.
He can assume about the number of adenines and their position on the sequence will be equal between the sample found at the crime scene and one sample from the suspicious individual.
<h3>What is forensics DNA?</h3>
Forensics DNA refers to the techniques to identify suspicious by comparing DNA profiles with those obtained from the crime scene.
Forensics DNA may result very useful to solve criminal cases by comparing nucleotide sequence between samples.
In conclusion, he can assume about the number of adenines and their will be equal between the sample found at the crime scene and the suspicious individual.
Learn more about forensics DNA here:
brainly.com/question/19238665
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