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
Amiraneli [1.4K]
3 years ago
6

A biologist has been studying two populations of trout in Montana for the last 25 years, when the two populations were establish

ed from one common population. In the southern population, the fish now have a slightly different mouth shape. But the northern population hasn't changed from the original type. The new shape works well in catching the type of prey common in the habitat of the southern population. Which is the best explanation for the gene differences in the two populations?
Biology
1 answer:
ludmilkaskok [199]3 years ago
8 0

Answer:

Positive natural selection.

Explanation:

The positive natural selection is a type of natural selection that increases the frequency of an allele or trait when it is advantageous for the population. What happened in the example is that the mouth with the slight change in  morphology (trait)  was more advantageous for the population in the south in relation to the  ancestral morphology  (still preserved in the population in the north), and therefore its frequency increased. This, in turn, is due to the fact that the food (prey) is not the same in the two habitats (north and south).  The specific prey in the south,  caused the new morphology to be selected, (increasing the frequency of individuals with the new mouth),  becasue probably that trait allows the trouts in the south to hunt more effectively.

You might be interested in
Enlist the significance of reproduction
Naddik [55]
To ensure the continuity of the species
increase variation in species for natural selection to occur
7 0
3 years ago
Read 2 more answers
In the process of fat hydrogenation, hydrogen atoms are added to which part of the molecule?
Murljashka [212]
B is the correct answer
6 0
3 years ago
How are primary and secondary succession similar and how are they different?
stepladder [879]
They are similar to those of primary succession, primary succession occurs in an area without any initial. Succession always begins on a barren surface, whereas secondary succession be gains in environments that already possess soil. I hope this helps.
4 0
2 years ago
Is there any solid scientific evidence that humans have been cloned?
Marrrta [24]

There is no solid scientific evidence that humans have been cloned.

6 0
3 years ago
The density of earth's atmosphere is 1.217 kg m^-3 calculate the density of venus' atmosphere
Svetach [21]

Answer:

about 65 kg m−3

Explanation:

4 0
3 years ago
Other questions:
  • How could disease-causing bacteria get inside a cell without damaging the cell membrane?
    12·1 answer
  • An example of the interaction of the nervous and endocrine systems can be seen in our response to danger. The _______________ or
    8·1 answer
  • How many more phases occur during meiosis than during mitosis?<br> none<br> two<br> four<br> six
    7·2 answers
  • A stimulus type that occurs within the organisms body is
    10·1 answer
  • The Tacoma narrows bridge collapsed due to?
    10·1 answer
  • As the demand for more paper grows, more
    14·1 answer
  • What is true about the scientific inquriry
    10·1 answer
  • Why does the land around a once active coal mine remain barren?
    11·1 answer
  • Question 8 of 10<br> Which question can be answered using the scientific process?
    11·2 answers
  • What is magmatic differentiation? how might this process lead to the formation of several different igneous rocks from a single
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!