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frez [133]
3 years ago
12

You are an experienced naturalist and biologist and you observe two birds mating that you do not believe are members of the same

species. The eggs from this breeding do not hatch, and when you obtain one of the eggs, you find embryonic development stopped not long after fertilization. Which of the following conclusions is supported by these observations?
A) Pre-zygotic isolation prevented successful reproduction.
B) Post-zygotic factors prevented successful reproduction.
C) Behavioral isolation prevented successful reproduction.
D) Temporal isolation prevented successful reproduction.
E) This is evidence to suggest the two types of birds are a single species.

Biology
1 answer:
Zepler [3.9K]3 years ago
7 0

Answer:

B) Post-zygotic factors prevented successful reproduction.

Explanation:

Postzygotic factors may influence the formation of the fertile offspring.

The postzygotic barriers basically involves the formation of the hybrid organisms which do not survive past the embryonic stages i-e hybrid inviability / the hybrid creation that is unable to form the offspring i-e sterile.

So , in the given scenario option B )Post-zygotic factors prevented successful reproduction is the right answer .

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Complete the following sentences to describe the stages of the lytic cycle of viruses. Then, place the stages in chronological o
ddd [48]

Answer:

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2. During the ___ Penetration __ stage, the capsid of virus combines with receptors on the host cell's plasma membrane.  

3. During the__ Biosynthesis ____stage, viral nucleic acids and capsid components are produced.

4. During the ___ Release __ stage, lysozyme enzyme is produced, is rupturing the cell membrane and releasing viral particles.  

5. During the___ Maturation ___stage, viral nucleic acids and capsid components are assembled to produce viral particles.

Explanation:

I have attached picture explanation whole lytic cycle.

6 0
3 years ago
In the cranes what does songsam recall in the two flashbacks to his childhood? explain how these memories motivate songsam's act
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The "Cranes" is a short story book written by Hwang Sunwon. The story is set in Korea during the Korean War and focuses on two childhood friends, Songsam and Tokchae, who are on opposite sides during the war. Songsam has two flashbacks of his childhood memories with his friend Tokchae, where he remembers how they used to climb the trees and catch cranes. These flashbacks act as a reminder of the times he had spent with his friend and the importance of this friendship. As a result, these memories motivate him to let Tokchae free.
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3 years ago
An anthropologist discovers the fossilized heart of an extinct animal. The evidence indicates that the organism's heart was larg
Paladinen [302]

A reasonable conclusion supported by these observations is that the animal was endothermic and had a high metabolic rate.

<u>Explanation:</u>

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If a variation occurs, i.e. if the heat produced is less than the heat loss, the metabolic rate increases to compensate for that loss. Shivering is another method used by people and many other warm-blooded organisms to boost their body temperature. But in case the heat loss is smaller than the heat produced, the process of panting or suddening occurs to increase the heat loss.

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6 0
3 years ago
Read 2 more answers
A hypothesis is a testable explanation true or false
Ainat [17]

True.

After forming a hypothesis, or an explanation that would be experimented on, you would be <em>testing</em> it to see if it gives the results you were looking for.

~

7 0
3 years ago
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