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Mumz [18]
3 years ago
10

Why is it likely that MOST speciation is allopatric?

Biology
1 answer:
LenKa [72]3 years ago
6 0

Answer:

e. Because gene flow between populations prevents genetic divergence in sympatry.

Explanation:

Speciation requires genetic divergence between populations of a species to isolate them reproductively. however, when present in the same habitat, gene flow between populations of a species does not allow their reproductive isolation and thereby, prevents the formation of new species. These populations need strong episodes of disruptive selection for their reproductive isolation.  

On the other hand, two geographically isolated populations can not interbreed and thus, there is no gene flow between them leading to their genetic divergence and speciation. So, allopatric speciation is more common than sympatric one.  

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A force is applied to a particle along its direction of motion. At what speed is the magnitude of force required to produce a gi
krek1111 [17]

Answer:

Explanation:

The detailed steps are as shown below

  • Recalling from F = ma
  • a = F/m
  • but magnitude of force F = √ [ 1 - v²/c²]

but acceleration twice as great as the force required to produce the same acceleration;

  • 2m = m / √[ 1 - v²/c²]
  • 2 = 1 / √ [ 1 - v²/c²]
  • square both sides ;

4 = 1 / [ 1 - v²/c²]

1/4 = 1 - v²/c²

v²/c² = 3/4

v/c = √ [3/4]

v = 0.87c

but speed of light c = 3 x 10^8m/s

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v = 2.61m/s

5 0
3 years ago
What is true about viruses
Blizzard [7]

Answer:

D if not try B

Explanation:

6 0
2 years ago
Read 2 more answers
Can someone please help on these two question Please I don't get this at all I'm really confused
marissa [1.9K]
Alleles are letters that represent dominant and recessive traits.

A capital letter represents a dominant trait
A lowercase letter represents a recessive trait.

Dominant traits over shadow the recessive ones. This is known as complete dominance.

Referring to your questions let's us the alleles HH, Hh, and hh for the height of the pea plants.

But what do those letters mean?

HH = homozygous dominant (Tall)
Homo means same.

hh = homozygous recessive (Short)

Now this is different: here's Hh.
There's a capital AND lowercase letter.
This means that the plant carries the gene for tall and short plants, and can pass on either trait to the offspring.

BUT the dominant always over shadows the recessive. So Hh is a tall plant.

Hh = heterozygous (hybrid) (Tall)
You can interpret hetero meaning different.

Now I hope you're with me!

For question two it asks if a short plant can ever be a hybrid.
Referring to what I just said, that answer would be no.
Because there is no dominant trait to over shadow the recessive.

And short plants have the hh alleles, and they are homozygous NOT heterozygous (hybrid).

I hope this helps, and makes sense! If you have any questions please let me know. Genetics can be confusing.
8 0
3 years ago
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What do phenotype and genotype have in common?
N76 [4]
They can both be used to identify organisms. Also, the phenotype of an organism is different depending on the genotype of the organism, making them relate to one another.

Hope this helps. Good luck! :)
8 0
3 years ago
Mutations in certain genes of bacteria cause them to be resistant to powerful antibiotics. What type of mutation is this for the
Masja [62]

A. beneficial its wouldn't be harmful cause antibiotics is a bacteria killer so its beneficial

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3 years ago
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