1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
asambeis [7]
3 years ago
6

BIOLOGY EXPERTS PLEASE HELP!!! Researchers originally theorized that DNA emerged before RNA. However, recent research on the ori

gin of life suggests RNA developed before DNA. Explain why this theory was revised using the structure and function of each macromolecule as support.
Biology
1 answer:
Vesna [10]3 years ago
7 0

Answer:

RNA has great capability as a genetic molecule; it once had to carry on hereditary processes on its own. It now seems certain that RNA was the first molecule of heredity, so it evolved all the essential methods for storing and expressing genetic information before DNA came onto the scene.

Explanation:

oof

You might be interested in
The measured distance between genes D and E in a two point test cross is 50 map units. What could this mean in physical terms
balu736 [363]

Answer:

Genes that express 50% of recombination frequency or more are not linked genes. They might be in different chromosomes or located in the same one, but too far from each other.    

Explanation:

Genes are physically located in chromosomes. Many genes segregate independently after crossing-over because they are located far away from each other. But some other genes are too close, and they do not segregate independently. These are the linked genes that do not exhibit an independent distribution, and they inherit together more frequently.

We need to know that 1% of recombination frequency = 1 map unit = 1cm. And that the maximum recombination frequency is always 50%.

When the recombination frequency is inferior to 50%, genes are linked. If it is equal or superior, they are not linked. Genes are located far enough from each other to assort independently.

Genes that express 50% of recombination frequency or more are not linked genes. They might be in different chromosomes or located in the same one, but too far from each other.

8 0
3 years ago
Cardiovascular effects of the sympathetic division include all except ________.
PIT_PIT [208]

Answer:

A. increase of heart rate and force

5 0
3 years ago
Which component of gastric juice is most
viktelen [127]

Answer:

Of these 5 components, pepsin is the principal enzyme involved in digestion of protein. However, pepsin is released in its inactive form, or zymogen form, known as pepsinogen. By secreting pepsin in its inactive form, the stomach prevents digestion of protective proteins in the lining of the digestive tract.

Explanation:

8 0
4 years ago
Which of the following statements is TRUE?
brilliants [131]

Answer: its transfer all the memory through out the stem

Explanation: All of the memories go in the brian through the stem

5 0
3 years ago
Read 2 more answers
An external or internal cue or combo of cues that produces a response is called? A) motive B) observation C) reaction D) stimulu
uranmaximum [27]

\huge\underline{\underline{\boxed{\bm {Answer:}}}}

○ \large\tt{A.)} motive

○ \large\tt{B.)} observation

○ \large\tt{C.)} reaction

◉ \large\tt{D.)} stimulus

\huge\underline{\underline{\boxed{\bm{Explanation:}}}}

The cue or combo of cues that produces a response is called a \large \sf{stimulus}, which is a thing or event that causes a specific reaction in an organ or tissue.

6 0
2 years ago
Other questions:
  • With no difference in temperatures and 100% humidity, will it rain? Why or Why not?
    15·1 answer
  • The effect of a catalyst on an equilibrium is to __________.
    8·2 answers
  • When something is frozen does it increase or decrease in density?
    15·2 answers
  • Suppose that in humans the ability to roll the tongue (R) is dominant to being unable to roll it (r). Having freckles (F) is dom
    7·1 answer
  • Match the following
    8·1 answer
  • Why are invasive species dangerous to the environment?
    6·1 answer
  • Using the graph above, which answer choice correctly explains why there is a decrease in the rate of photosynthesis between the
    11·1 answer
  • Blood is made in your heart. true or False
    8·1 answer
  • What does the 5 layer model of the earth show?
    7·1 answer
  • For most anchoring situations, which is the best type of anchor line?.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!