Answer: Temporarily separated
Explanation:
The species that once lived together and now are separated due to the time can be termed as temporarily separated.
This happens when two similar species live together but with time they get separated and theirs habits change.
Here, one of the bat species feed on animals during the daytime and other one feeds at night.
thyroid
parathyroid
adrenal
The correct answer is adrenal
Adrenal glands are also called suprarenal glands which are located on the kidneys. They produce various hormones including epinephrine (adrenaline). Adrenaline is secreted when a person is under a fight-or-flight. This hormone quickly responds to the emergent situation or threat by increasing heart rate, slowing blood flow to muscle cells and changes other autonomic nervous functions, which gives energy and strength to fight any emergency.
The VanHelmont experiment consists of a measure of the amount of soil before and after a plant grows.
He wants to demonstrate the independence of soil.
After five years he measures the amount of soil and only 2oz gone from the initial amount of soil when the plant weight much more.
The conclusion was the plant use water to grow, and not the soil.
Afterward, he discovers CO2 but, not until the discovery of photosynthesis we all knew how everything in plants works.
B. Use a nucleic acid probe.
C. Subject the specimen to amniocentesis.
D. Use the polymerase chain reaction.
E. Subject the DNA to restriction enzymes.
Answer:
D. Use the polymerase chain reaction
Explanation:
Polymerase chain reaction (PCR) is a molecular technique used to make multiple copies or amplify a particular DNA sample. This enables scientist conduct thorough genetic analysis on minute sample of DNA, simply by amplifying it to a large quantity.
The PCR machine is usually used to amplify DNA fragment. The DNA fragments undergo three major steps successively: denaturation, annealing and elongation
The archaeologists would use the Polymerase Chain Reaction (PCR), a method for amplifying a specific fragment of DNA, to get sufficient DNA from the small scalp tissue sample for gene analysis. So the correct option is D.
To enhance the amount of DNA for a thorough analysis of the ancient human genes, the archaeologists would use the polymerase chain reaction (option D). The polymerase chain reaction, commonly known as PCR, is a method used to make numerous copies of a specified fragment of DNA. PCR is highly beneficial in research scenarios when only a small amount of DNA is available, as this technique can amplify a single or few copies of a specific DNA sequence to generate thousands to millions of copies. Techniques like electrophoresis, use of a nucleic acid probe, amniocentesis, or subjecting the DNA to restriction enzymes, are not primarily for amplification of DNA, but serve other purposes such as DNA separation, detection, prenatal testing, or DNA cutting at specific sequences, respectively.
#SPJ12