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Inga [223]
2 years ago
8

The following options are all reproductive barriers. Which one is an example of a prezygotic barrier in which the two different

species do mate? View Available Hint(s) The following options are all reproductive barriers. Which one is an example of a prezygotic barrier in which the two different species do mate? Two dragonfly species regularly mate, but their gametes are incompatible. One bird species lives in wetlands, the other in dry forests; hence, they do not encounter each other. Hybrid mules produced by mating donkeys and horses are sterile. Two crayfish species cannot interbreed because their genitalia do not engage properly with each other.
Biology
1 answer:
12345 [234]2 years ago
6 0

The correct option is this: TWO DRAGONFLY SPECIES REGULARLY MATE BUT THEIR GAMETES ARE INCOMPATIBLE.

In biology, there are different types of reproductive barriers, one of these is prezygotic barrier. A prezygotic barrier is a kind of mechanism that prevent reproduction from occurring by blocking fertilization. In this case, the concerned species will be mating together, but their gametes will not be compatible and thus, zygote will not be formed.

A postzygotic barrier on the other hand is said to occur when the reproduction process is blocked after the formation of zygote or after fertilization has taken place. A good example of this is an hybrid mule that is sterile and can not reproduce.  

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You work for the WWF. Write a letter to the mayor of a small farm town to explain why this town is experiencing erosion, and why
horrorfan [7]

The letter should contain concerns about the causes and ill effects of erosion.

<h3><u>Explanation</u>:</h3>

Sir,

I am very sad to inform you that the town of Hariharanpur is suffering from continuous erosion for the last 3 years. Even after having proper knowledge about this fact, you being the mayor, are not taking any charge of this situation.

The town is situated just by the side of River Ganges which makes it's soil full of moisture. Along with the repeated deforestation and tree cutting for urbanisation, the smallest of the rain falls are also eroding a lot of soils. This can lead to severe landslides in river Ganges with severe loss of properties as well as loss of lives too.

So i request you to start embanking the river as well as to start planting new trees to save the town from getting lost under Ganges.

Thanking you,

XYZ.

5 0
2 years ago
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Which combinations of traits would be possible in future generations if the genes for fur color and eye color genes are closely
Scilla [17]

peloncito0076

black fur, black eyes and white fur , red eyes

6 0
2 years ago
Which of the following statements is true regarding the complexity of biological systems
Leto [7]

The correct answer is option B

Biological systems can be defined as the complex system in which the function of a component is dependent on the functioning of the other components. By knowing the function of each component one can get an insight into the structure and organization of the living system. The different components of the biological systems are interconnected and they function accordingly.

7 0
2 years ago
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why does the presence of 22 large herbivore species at Mpala seem to contradict the competitive exclusion principle Dr. Pringle
stealth61 [152]

Dr. Pringle suggests that there's only very few large herbivorous species that can survive in certain area. The reason behind his claim is that according to him there will be only enough food for few large species, so there's natural limitations in the food sources, as there should be enough to support them in order for them to survive.

On the other hand, in Mpala, there's 22 large herbivorous species, which directly contradicts Dr. Pringle's hypothesis. The reason why so many large species of herbivores an survive in Mpala and always have enough food for all of them, is that they have all specialized in eating certain types of plants or parts of plants, thus they are not direct competition to one another, and there's always enough food for all of them.

5 0
2 years ago
Each statement below represents a feature that has been claimed to exist on Mars. Sort the statements into the correct bin accor
bagirrra123 [75]

Answer:

1, 4, 5 are true. 2, 6, 7, 9 are not true. 3 and 8 are not known.

Explanation:

According to the information we have gathered from the vehicles sent to Mars and the data they collected and analyzed, "Minerals of types known to form in liquid water" on Mars. There is "abundant water ice" and also "dried-up river beds".These statements actually exist.

"Surface pools of liquid water" does not exist on Mars. "A network of straight-line canals", "cities built by an ancient civilization" and "frequent rainfall and snowfall" also do not exist on Mars according to the data.

We do not have any information to prove the existense of "underground pockets of liquid" and "microscopic life" but they are possibilities.

I hope this answer helps.

8 0
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