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
gregori [183]
2 years ago
13

How specifies that are separated for a river, rocks, mountains, forest ; can at some point not being able to interbreed anymore

Biology
1 answer:
Allushta [10]2 years ago
8 0

Answer:

Species separated by a physical barrier for a long time, suffer allopatric speciation, so they can not interbreed anymore.

Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flow, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

Vicariance is the geographical separation of an original population into two or more new groups. Discontinuities in the physical environment like rivers, mountains, water, etc., are physical barriers that impede genetic flow between the separated groups.

The process of allopatric speciation involves different steps:  

  1. The emergence of the barrier.  
  2. Interruption in the genetic interchange
  3. The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
  4. Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.  
  5. Prezigotic isolation mechanisms favored by selection once occurs a secondary contact between the new species in formation.

You might be interested in
You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male r
goblinko [34]

Answer:

You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male red-winged blackbird perched on it defending its nesting territory. This is an example of <u>uniform dispersion.</u>

Explanation:

There are usually three dispersion patterns :

  1. Clumping
  2. Uniform dispersion
  3. Random dispersion

Clumping is the most common.

Uniform dispersion occurs when

  • resources are scarce
  • Individuals are evenly spaced in a habitat
  • Due to competition or territorial behavior

While Random dispersion occurs when resources are plentiful.

Hence ,This is an example of <u>uniform dispersion.</u>

3 0
3 years ago
Describe the functional unit of the nervous system
emmasim [6.3K]
"Neurons" are the functional unit of the nervous system; it is the specialized cells transmitting nerve impulses

Hope this helps!

4 0
3 years ago
According to the phylogenetic tree, which domains are more genetically related ?
guapka [62]
Without seeing the image ...I can suggest C as bacteria and archae are the most similar besides all other options ! am I right !!!
7 0
3 years ago
Read 2 more answers
Each of two parents has the genotype green divided by brown​, which consists of the pair of alleles that determine eye color​, a
Liula [17]

Answer:

A)BB-Bg-Bg-GG

B)The probability is 25%

C)The probability is 75%

Explanation:

In order to solve this you just have to create a punnet square, where the parents are shown to both have brown and green coloured eyes genes, so it would be like this:

               Mother:      Brown                                 Green

Father↓  

Brown                      Brown-Brown                 Brown-Green

Green                      Brown-Green                  Green-Green

As the instructions say that if any kid had one green allele that would be the dominant, only the Brown-Brown will show the fenotype, so there´s 1/4 chance to happen, or 25%, the other probability of having green eyes is 3/4 or 75%

8 0
3 years ago
Factors<br> Increase or Decrease<br> in Carrying Capacity?
ale4655 [162]

Answer:

Carrying capacity, or the greatest number of people that an environment can support over time without harming or degrading it, is controlled by a few basic factors: food supply, water availability, and space. Carrying capacity, or the greatest number of people that an environment can support over time without harming or degrading it, is controlled by a few basic factors: food supply, water availability, and space.

Explanation:

5 0
2 years ago
Other questions:
  • Which term is used to describe genes that are located physically close to each other on the same chromosome?
    14·1 answer
  • Julie experienced inexplicable blindness. she visited several ophthalmologists, all of whom indicated there was no physical basi
    11·1 answer
  • The theory that too much money in the economy causes inflation is referred to as the
    5·1 answer
  • Can someone please write a 250-word essay about one of these systems
    8·1 answer
  • Which is the strip of brain matter near the front of the parietal lobe that is involved in receiving information from the senses
    14·1 answer
  • What happens when sodium potassium pump stops working?
    14·1 answer
  • Where are the two processes that result in rocks begins done into smaller pieces ?
    13·1 answer
  • A skull from the genus Homo that dates from approximately 750,000 years ago is discovered. Where would the foramen magnum most l
    7·2 answers
  • Which cells in your body goes through mitosis the most and least?
    7·2 answers
  • Where does the urea in the urine come from?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!