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sladkih [1.3K]
2 years ago
6

Hello everyone Free Bio Class Interested Students Can join mwq-bmxj-sym

Biology
2 answers:
andriy [413]2 years ago
8 0

Answer:

Oh. That's nice! This is a good way to build a community!

damaskus [11]2 years ago
3 0

Thanks for telling........

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Consider the evidence that explains how physical separation of two populations of a species can cause speciation. What effect do
Tom [10]

Answer:

  • Interruption in the genetic flow between separated groups
  • The emergence of new mutations in each of the groups, and their accumulation in time. Slow and gradual differentiation between populations.
  • Genetic divergence by natural selection and reproductive isolation
  • Prezigotic isolation mechanisms

Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background that can give 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 flux, as the two new groups that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

The process of allopatric speciation involves different steps that affect organisms:

  • The emergence of the barrier.
  • Interruption in the genetic interchange
  • The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
  • Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
  • Prezigotic isolation mechanisms will be favored by selection if occurs a secondary contact between the new species in formation.
4 0
2 years ago
Give an example (except for a plant responding to light) of an organism's response to a stimulus.
kolezko [41]

Answer:

plants For example, phototropism is the plant's response to stimulus, i.e. sunlight. A plant hormone “auxin” keeps the plant's direction towards the sun by activating the growth in a particular part of a stem. Similarly, gravitropism in plants responds to the stimulus, i.e. gravity

Explanation:

mark me brainliest!!

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2 years ago
What is missing from this food chain?
Ierofanga [76]

the decomposer is missing. The rabbit is the herbivore, the rasberry bush is the producer, and the owl is the consumer. The decompoer is the only thing not on there.

8 0
3 years ago
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Explain how the structure of the cell membrane allows it to be selectively permeable. Make sure to include the specific componen
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the phospholipids are tightly packed togther and the membrane has a hydrophobic interior.

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The system of plant and animal classification developed over 200 years ago and is still used today based on:
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B. Structural Similarities
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