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icang [17]
3 years ago
10

Ecologists have studied the Galapagos islands for a long time because of the diversity of the populations they possess. It is th

ought that small colonies of finches emerged on each of these small islands, each small population carrying only certain alleles of the parent population. Over time, the emerging populations varied greatly from one another, leading to the development of new species. Which mechanism of speciation best describes this scenario? A) migration B) founder effect C) temporal isolation D) behavioral isolation Elimi
Biology
2 answers:
Verizon [17]3 years ago
8 0

B) founder effect, your welcome

Komok [63]3 years ago
5 0

The correct answer is - B) founder effect.

The founder effect represents the loss of genetic variation in a new population due to the small number of individuals from the larger population that have formed the new population.

The finches on the Galapagos Islands have developed unique characteristics in accordance to their environment. Because there were only very small number of individuals that settled each island, the genetic variation was not the same as while they were part of the larger populations.

Because of this, those small number of individuals starter to develop unique traits only on that single island, which can easily be seen in the shape of their beaks in accordance to the available food source.

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kow [346]
<span>Adjacent-1 segregation and adjacent-2 segregation.

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5 0
3 years ago
I’m pretty sure there is 3. Can someone help me?
MissTica

Answer:

D. rigidity and shape that's why in plants they stand upright for photosynthetic process.

6 0
3 years ago
What two words best describe bacterial reproduction? Why?
Vadim26 [7]

Answer: Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells. The two daughter cells are identical to the parent cell.

Explanation:

4 0
3 years ago
¿Por qué las bacterias resistentes se multiplican más rápido después de que un paciente ha tomado antibióticos en comparación co
Fofino [41]

Answer: In Spanish

¿Cómo se vuelven resistentes las bacterias a los antibióticos?

R: Las bacterias pueden volverse resistentes a los antibióticos de varias maneras. Algunas bacterias pueden "neutralizar" un antibiótico cambiándolo de una manera que lo hace inofensivo. Otros han aprendido a bombear un antibiótico fuera de la bacteria antes de que pueda causar algún daño. Algunas bacterias pueden cambiar su estructura externa, por lo que el antibiótico no tiene forma de adherirse a la bacteria que está diseñada para matar.

Después de exponerse a los antibióticos, a veces una de las bacterias puede sobrevivir porque encontró una manera de resistir el antibiótico. Si incluso una bacteria se vuelve resistente a los antibióticos, puede multiplicarse y reemplazar todas las bacterias que fueron eliminadas. Eso significa que la exposición a los antibióticos proporciona una presión selectiva que hace que las bacterias sobrevivientes sean más propensas a ser resistentes. Las bacterias también pueden volverse resistentes a través de la mutación de su material genético.

Answer in English :

How do bacteria become resistant to antibiotics?

A: Bacteria can become resistant to antibiotics through several ways. Some bacteria can “neutralize” an antibiotic by changing it in a way that makes it harmless. Others have learned how to pump an antibiotic back outside of the bacteria before it can do any harm. Some bacteria can change their outer structure so the antibiotic has no way to attach to the bacteria it is designed to kill.

After being exposed to antibiotics, sometimes one of the bacteria can survive because it found a way to resist the antibiotic. If even one bacterium becomes resistant to antibiotics, it can then multiply and replace all the bacteria that were killed off. That means that exposure to antibiotics provides selective pressure making the surviving bacteria more likely to be resistant. Bacteria can also become resistant through mutation of their genetic material.

I don't know if this help you at all.

3 0
3 years ago
The Chinese-Japanese War (aka the Sino-Japanese War) primarily had to do with __________. Japan China Korea Russia
ankoles [38]
Between Japan and China in Korea. Fought over the control of Korea basically. 
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3 years ago
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