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BlackZzzverrR [31]
2 years ago
5

Why a single ovum is produced by oogenesis

Biology
1 answer:
Tasya [4]2 years ago
7 0

Answer: The other ova become polar bodies.

Explanation: After meiosis I and II in oogenesis, there should be 4 eggs, but there aren't because the other eggs 3 eggs become these small cells called polar bodies that end up dying out through apoptosis. The reason why polar bodies are made is because they take out extra DNA that the single ovum is supposed to have.

So only 1 egg is made and the rest are polar bodies that get rid of extra DNA and then die by apoptosis.

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Describe two ways that race cars produce waste answers
katrin [286]
The  race cares produce  waste  answer  by
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2.by  emitting waste  that  led  to human  health problems
 The  race cares  generate  waste which  led  to  pollution  of  environment. The use  of motor  oil,  brake  fluid  and  leaded  gasoline  led  to  production  of  toxic  chemicals  These  chemical  have  been  shown  to  cause  cancer,  birth  defect  and  kidney problems.
8 0
2 years ago
Read 2 more answers
A scientist must always try to avoid _____________ in scientific experiments.
goblinko [34]

A scientist must always try to avoid bias in scientific experiments. It is important for scientist to avoid leaning into their bias when trying to confirm their hypothesis. As much as possible the scientist should be able to follow the scientific method to avoid bias. 

8 0
2 years ago
Which statement gives an advantage of multicellular organisms?
Illusion [34]

Answer:

D

Explanation:

Bacteria can reproduce quickly which is why it is sometimes hard to get rid of a cold.

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Size does not define a cell.

Multi-cellular organism have complex cell structure in which each cell has the ability to tend to it's necessary functions.

Hope this helps :)

3 0
2 years ago
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A chromosome contains ____
Papessa [141]
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6 0
2 years ago
Alma is walking in a park. Suddenly, a wild dog charges toward her. Alma is frightened. The starts to respond by increasing her
lisabon 2012 [21]
The answers are sympathetic nervous system and the parasympathetic nervous system, respectively. 

The sympathetic nervous system (SNS) controls the response of our body to threats or stressors. It prepares the body for an intense physical activity by increasing the body's biological processes like heart rate, breathing and the like. This is also known as the "Flight-or-fight" response. 

The parasympathetic nervous system (PNS) on the other hand, responds the opposite way. When threats or stressors are no longer present, the PNS works to relax and calm the body. This is done to help the body recover from the high activity it previously went through. 

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