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Sauron [17]
2 years ago
13

What is the chromosome number for each is cell division occured

Biology
1 answer:
pogonyaev2 years ago
5 0
It is a two-step process that reduces the chromosome number by half from 46 to 23 to form sperm and egg cells when the sperm and egg cells unite at conception each contributes 23 chromosomes so the resulting embryo will have the usual 46
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In which scenario could natural selection most obviously occur?
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<span>Natural selection is likely when there are stronger selection pressures. For example, a perpetual selection pressure is the fact that organisms have to compete for food and resources, meaning the best adapted ones survive. However, a stronger selection pressure may cause natural selection to occur more obviously. An example of this is when the number of white peppered moths decreased during industrialization in England due to the soot collecting on the trees. The change in population was very fast and obvious.</span>
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Describe 2 homologies (structures that were shared from a common ancestor) between the Zeuglodon and the Orca.
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Answer:

Homologous structures can be described structures which originate in different organisms from a common ancestor and may or may not have the same functions.

Zeuglodons can be described as ancient whales and Orca is a common whale today known as the killer whale.

<u><em>Scientific studies show that Zeuglodans and Orca have many structures in common such as:</em></u>

  • <u><em>Having teeth with two roots</em></u>
  • <u><em>The presence of nostrils</em></u>
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3 years ago
What is the effect of soil salinization on crops?
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Answer:

Salinity affects production in crops, pastures and trees by interfering with nitrogen uptake, reducing growth and stopping plant reproduction. Some ions (particularly chloride) are toxic to plants and as the concentration of these ions increases, the plant is poisoned and dies.

Explanation:

Brainliest please?

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Which of the following best explains how a dissecting microscope differs from a compound light microscope?
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The answer is : A compound light microscope has much greater magnification power than a dissecting microscope. Compound Microscopes have greater magnifications, but lower resolutions than the Dissecting microscopes. Compound light microscopes are usually used to view things that are too little to see with the naked eye.

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A student uses a string to model four pairs of homologous chromosomes in a parent cells. Each Chromosome pair is a different col
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<h2>Answer is option "C"</h2>

Explanation:

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  • Meiosis, then again, is a particular type of cell division that happens in living beings that imitate explicitly. As referenced above, it produces regenerative cells, for example, sperm cells, egg cells, and spores in plants and parasites.  
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  • Hence, the right answer is option C "four strings, each a combination of different colors"

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