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
Fed [463]
2 years ago
7

Knowing that some individuals from Island 1 colonized Island 2, biologists sample the Mainland and two Island populations fifty

years after the colonization events. They determine that allele frequencies are similar on both islands, but they are significantly different than the frequencies of the mainland population. Which of the evolutionary mechanisms could be used to explain these observed
Biology
1 answer:
raketka [301]2 years ago
5 0

Answer:

The evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect.

Explanation:

Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time and eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster -bottleneck effect- or because of a population split -founder effect-. In <u>founder effect</u>, a new population originates when a few individuals who are coming from a bigger population carrying its genes, settle down in a new area and reproduce. This small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be completely lost. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, <u>genetic variability is reduced</u> and there exists the possibility of developing a peculiar allelic composition. If the number of individuals that originated the new population is low, the founder effect will be very extreme, because the effects of the genetic drift are inversely proportional to the original number of individuals.  

<em>In the exposed situation, the evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect. The fact that both islands are similar in their frequencies might be due to little genetic variation on island 1, or because dispersion to island 2 is a recent event on time. </em>

You might be interested in
Sean outperforms the other air traffic controllers. Through his tremendous focus and attention, he accurately detects three time
enyata [817]

Answer:

In the mentioned scenario, norepinephrine and acetylcholine are the neurotransmitters, which would have been present at the higher concentrations in Sean's brain. Norepinephrine signifies to a neurotransmitter that plays an important part in dreaming, emotions, sleeping, attentiveness, and learning.  

It also gets released in the bloodstream as a hormone, where it augments the rate of heart and causes the blood vessels to contract. Another neurotransmitter called acetylcholine signifies the chemical that is released by the motor neurons to instigate the muscles.  

3 0
3 years ago
Carlo is wondering what causes plants to grow at different rates. Carlo’s hypothesis is “Plants will grow more when the day is l
kirill [66]

Answer:type of soil

Explanation:

Because the only thing thats changing is the time of day

7 0
3 years ago
Useful mutations become established much more quickly in a population of microorganisms, such as the cluster of E-coli bacteria
Nezavi [6.7K]
<span>B) reproduce asexually and at a fast rate. </span>
7 0
3 years ago
Read 2 more answers
What is true of saturated fatty acids?
anzhelika [568]

<u>Answer:</u>  They have the maximum number of hydrogen atoms.

<em>Saturated fatty acids have the maximum number of hydrogen atoms.</em>

<u>Explanation:</u>

A fatty acid that doesn’t contain any double bond between carbons in their molecular structure is known as saturated fatty acid. They are also incapable of absorbing hydrogen in their molecular structure thus the name.

Saturated fatty acids are generally found in animal fats like butter, milk and dairy products. Because of the higher melting point of those fatty acids, they are generally found in solid state at reem temperature.

6 0
3 years ago
What would happen if we didnt have mitochondria ? ( paragraph)
slamgirl [31]
Basically, the cell wouldn't be able to "breathe," as the mitochondria is where the respiratory functions of the cell happens. No energy would be produced, and then the cell would stop moving and die.
6 0
3 years ago
Other questions:
  • Which statement best describes the behavior of particles in a solid?
    7·1 answer
  • Please help me answer this question!! ~40 points~ What happens when a neuron is stimulated by another neuron?
    12·2 answers
  • Absolute dating can be determined by (Select all that apply). A. Tree ring patterns B. Earth's magnetic field C. A historian's j
    15·2 answers
  • What are two ways that proteins can impact the cell cycle and cause cancer
    13·1 answer
  • Which of the following are potential musculoskeletal side effects of some prescription medications?
    8·2 answers
  • Are fatty acids lipids, if so why?
    13·1 answer
  • Name all glands that need to be shut down to stop the making/ synthesis of T3/T4.
    15·1 answer
  • Describe the function of each organelle. Nucleus Ribosome Endoplasmic reticulum Golgi apparatus i really need help.
    9·1 answer
  • In photosynthesis, what form of energy is sunlight converted to, and how is this<br> energy stored?
    12·1 answer
  • Which of the following materials is necessary for scientists to estimate the age of the solar system?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!