Explain why and how theories may be changed or replaced over time.

2 answers:

8 0

Answer and Explanation: This is true that theories do change or get replaced overtime. We all know that in any scientific investigation the scientist put forth the theories which are basically the ideas explaining something particular. We also know that the world is experiencing constant changes and those changes could be of Technology or of overall world order so, whenever a scientist gives us the theory, that theory is made according to the situations and environment of that particular time and in future with the passage of time and with the advancement of Technology and other variables, scientist do need to re-evaluate theories. They either make some positive changes keeping in view the changing circumstances of the current situation or discard the theory altogether depending on its nature. The name research itself indicate that scientists research the already searched idea and in that way the New theory which comes after the modification of old theory or altogether the new theory takes place of the old one.

beks73 [17]3 years ago

3 0

Answer:

Sample Response: Theories may be changed over time as new information is discovered or new technologies are developed. New developments lead to changes in experimental methods, which provide information that may or may not support the existing theory. If the theory is still supported, it may be updated. If it is not supported, but the results are true and relevant, the theory may be replaced

Explanation:

You might be interested in

How do writers use direct characterization in a story?

earnstyle [38]

Direct characterizaation is what the author says about the character.
So B would be correct

8 0

4 years ago

Read 2 more answers

A scientist is studying fruit fly wings. Straight wings are dominant, and curly wings are recessive. Which statement correctly d

svetoff [14.1K]

The offspring will have one allele for straight wings and one allele for curly wings.

Explanation:

Let W be straight wings (big letter for dominant allele)
Let w be curly wings (small letter for recessive allele)

Each fly has two alleles.
If a parent is true breeding, it only has one type of allele.
Parent 1 = WW (straight wings)
Parent 2 = ww (curly wings)

Cross the parents: WW x ww in a Punnett square (see photo below)
This is the F1 generation (generation produced by crossing the first parents).
There are only Ww offspring.

Therefore,
The offspring will have one allele for straight wings and one allele for curly wings.

4 0

3 years ago

In considering the cross YyRr x YyRr, the genotype ratio is YYRR:2YYRr:2Yyrr:4YyRr:YYrr:2YyRR:yyRR:yyRr:yyrr. True False

abruzzese [7]

True because it is dominant

3 0

4 years ago

People with one sickle cell allele are not likely to get malaria. what is this an example of?

Hunter-Best [27]

Answer:

Natural selection

Explanation:

he sickle cell mutation is a like a typographical error in the DNA code of the gene that tells the body how to make a form of hemoglobin (Hb), the oxygen-carrying molecule in our blood.

sickled cells can become stuck in small blood vessels, causing a "crisis" of pain, fever, swelling, and tissue damage that can lead to death. This is sickle cell anemia.

sickle cell anemia carriers have been <u>naturally selected</u>, because the trait has some resistance to malaria. Their red blood cells, containing some abnormal hemoglobin, tend to sickle when they are infected by the malaria parasite. Those infected cells flow through the spleen, which culls them out because of their sickle shape - and the parasite is eliminated along with them.

3 0

3 years ago

Which of the following represent an ecosystem?

asambeis [7]

Answer:

Explanation:

all of them are ecosystems:

Lakes/Ponds are a prime example of lentic ecosystems

Fishtanks are are described as a closed artifical ecosystems

Prairies are unique ecosystems that are dominited by grass and other plants.

8 0

4 years ago