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
IRISSAK [1]
3 years ago
14

Scientists use DNA to track the migration of humans across the planet. After a group migrates away from their ancestral homeland

, any mutations that occur are not mixed with those left in the ancestral population. Therefore, DNA samples taken from ____ would have the most unique mutations, representing the most recent population to migrate to a new area.
Biology
1 answer:
Alinara [238K]3 years ago
6 0

Answer: The Americas

Explanation:

Scientists use DNA to track the migration of humans across the planet. After a group migrates away from their ancestral homeland, any mutations that occur are not mixed with those left in the ancestral population. Therefore, DNA samples taken from __the Americas__ would have the most unique mutations, representing the most recent population to migrate to a new area.

You might be interested in
An alternation of generations for plants includes a ____ gametophyte generation and a ___ sporophyte generation.
kenny6666 [7]
An alternation of generations for plants include a haploid gametophyte and a diploid sporophyte.
6 0
3 years ago
By age 65, what percentage of adults are grandparents? 75 80 85 90
frutty [35]
85% of adults are grandparents by age 65. This estimation has been made in the U.S. from the surveying of the elderly. So, the correct choice is the third option: 85. 

Let me know if you need further info. :)

                - Dotz
7 0
3 years ago
The greenhouse and enhanced greenhouse effects refer to the return of approximately ______ percent and greater than ______ perce
Sunny_sXe [5.5K]

Answer:

The greenhouse and enhanced greenhouse effects refer to the return of approximately <u>80</u> percent and greater than <u>80</u> percent of the heat radiated by Earth.

Explanation:

During natural greenhouse effect :

. Solar radiation reaches the earth

. Re-radiation of heat occurs

. Less re-emitted heat

. More heath escapes into space

Hence the greenhouse effect refers to return of 80% of heat radiated by Earth.

While during Human Enhanced Greenhouse effect :

. Solar radiation reaches earth

. Re-radiation of heat occurs

. More re-emitted heat

. Less heat escapes into space

Hence the enhanced greenhouse effect refers to return of more than 80% of heat radiated by Earth .

5 0
3 years ago
What is this molecule
Aneli [31]
A group of atoms bonded together
7 0
2 years ago
How long does it normally take to process one 12-ounce beer from your system?
Darina [25.2K]

Once the alcohol goes into our system, an ounce of it is process for a period of one hour.

The first stop happens in the stomach where absorption through the gastric lining and bloodstream occurs. Stronger drinks are absorbed more quickly. The second stop happens in the brain where its function decreases/ is increasingly impaired as the BAC or blood alcohol content grows. The third stop will be in the heart. However, it should be noted that it does not receive any physical alcohol, but its effects on the heart are strong. Alcohol is a vasodilator which means it causes blood vessels to dilate. This indicates more blood flow through the body-- but lowers the overall blood pressure. The fourth stop will be in the kidneys where blood is filtered. The fifth stop will be in the bladder where it will excreted from the body. Lastly, the liver is where the rest of alcohol left in your system is broken down. This process is known as metabolizing. The chemical that remains after metabolization is acetaldehyde and the body gets rid it by further metabolizing it into carbon dioxide and water.

Therefore, an ounce of alcohol is processed in our body for 60 minutes or one hour.

7 0
3 years ago
Other questions:
  • The oxygen build-up in the atmosphere was caused by
    8·1 answer
  • All individuals have two alleles for a given trait. According to Mendel's ____________, these alleles are passed down one each f
    14·2 answers
  • Some synovial joints contain special crescent-shaped pads that provide additional shock absorption, and provide for a better fit
    12·1 answer
  • When a plant opens and closes its stomata, it is maintaining _____.
    7·1 answer
  • Plsss help 100 points extra <br> And brainliest
    11·2 answers
  • What characteristics do cell membrane and cell wall have in common
    13·2 answers
  • During transcription, what does messenger RNA do?
    9·2 answers
  • _________ when two or more organisms need the same resource (food, water, space, territory, mates) for survival.
    8·1 answer
  • Please help!! <br> Name two systems and explain how they<br> interact in the carbon cycle.
    7·1 answer
  • 11
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!