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
Brums [2.3K]
2 years ago
9

Which answer is not a mechanism for evolution? Genetic Drift Mutations Gene pool Natural Selection

Biology
2 answers:
lawyer [7]2 years ago
3 0
Genetic drift I think
jeka942 years ago
3 0
Yeah pretty sure its genetic drift
You might be interested in
Darwin focused on studying specific species on the Galapagos Islands and other places and observed
ANEK [815]
The answer is the 1st statement.
5 0
3 years ago
This question refers to the abo blood type locus. remember that the a and b alleles are codominant to each other and both are do
Fittoniya [83]
The man with blood type  A might have one of two genotypes:
1. Iᵃ  Iᵃ<span> 
2. </span>Iᵃ  i
In this case, Iᵃ is an allele for A group, and i is an allele for 0 group.
The ABO blood type is controlled by a single gene (the ABO gene) with three types of alleles (Iᵃ   Iᵇ    and   i)
6 0
3 years ago
Can you identify how chemicals cycle in an ecosystem?
natulia [17]
Nutrients move through the ecosystem<span> in biogeochemical </span>cycles<span>. A biogeochemical </span>cycle<span> is a circuit/pathway by which a </span>chemical<span> element moves through the biotic and the abiotic factors of an</span>ecosystem<span>. It is inclusive of the biotic factors, or living organisms, rocks, air, water, and </span>chemicals<span>.</span>
7 0
3 years ago
"Dietitians often recommend that we frequently consume foods containing omega-3 fatty acids. An omega-3 fatty acid is one that h
9966 [12]

An omega-3 fatty acid is one that has its first double bond at the <u>methyl </u>end of the molecule.

Explanation:

Fatty acids will have a methyl end and a carboxylic acid end and the long carbon chain.

The number of hydrogen atoms attached to the carbon atoms depends upon its saturation type – saturated or unsaturated fatty acid.

The main advantage of the unsaturated fatty acids is that they have fewer hydrogen atoms because they are replaced with a double bond between the carbon atoms.

There are both short chain (carbon atoms 18 or less) or long chain (more than 20) fatty acids.

Omega-3 fatty acids are polyunsaturated fatty acids (PUFA). Depending upon the carbon chain length, the first C=C double bond occurs between the third and fourth carbon atom from its methyl end on the carbon chain of the omega-3 fatty acid.

Omega-3 fatty acids are recommended by dieticians due to its immense health benefits especially for the heart since it reduces blood triglyceride level, blood pressure, plaque formation, and the risk factors for heart attacks or failure. These are also good for the eyes, to treat mental depression, and for fetal brain development during pregnancy.

7 0
2 years ago
What can you conclude is one disadvantage of the arrangement of glucose molecules that gives chitin and cellulose their strength
Lynna [10]
The correct answer is the option B) It does not allow for the accumulation of glycogen and, therefore, limits the organism's mobility.
Explanation:
In cellulose and chitin the arrangement of glycogen in in alternate arrangement that provides the support to the plants that makes it strong and the limits its mobility.
If plants lac their special arrangement of the glycogen in chitin and cellulose the water will flow in and it will not be stand upright.
Thus, the correct answer is option B) It does not allow for the accumulation of glycogen and, therefore, limits the organism's mobility.


5 0
1 year ago
Other questions:
  • Which best describes the effect of J. J. Thomson’s discovery?
    15·2 answers
  • How fast do seismec waves caused by earthquakes travel​
    7·1 answer
  • Greg has been given a small sample of metal. His teacher has assigned him to identify what type of metal he was given.
    12·1 answer
  • What are the mechanisms of natural selection, and how do they lead to changes in
    12·1 answer
  • Which of the following is a good reason for why tobacco smoke is considered a carcinogen?
    11·2 answers
  • Need help with lining up mutated DNA sequence
    8·1 answer
  • 3 examples of inherited variation in dragon fruit​
    14·1 answer
  • What type of final cells are produced in mitosis
    9·1 answer
  • ¿ Cuales acciones de limpieza deben realizarse en casa, para mantener un ambiente sano en su interior y entre quienes la habitan
    11·1 answer
  • 3. How can freshwater ecosystems be impacted by global climate change?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!