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borishaifa [10]
3 years ago
10

Multiple Choice

Biology
1 answer:
Agata [3.3K]3 years ago
4 0
The answer False I believe
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How has urbanization changed land,air and water quality
bulgar [2K]

Urbanization has changed literally everything over the years from the environment being destroyed little by little but also it effects water pollution and by factories being made puts a bunch of terrible greenhouse gasses that are not healthy to breath in.

mark this as best if helps

3 0
3 years ago
What must be done to breed dogs for a particular trait
Paraphin [41]

Answer:

Selective breeding

Explanation:

In order to get a dog that has specific desirable trait/s, then the owners of the dogs have to get involved. The involvement should be in the manner of only allowing dogs that have the same trait to breed between each other, but in no case to be allowed to breed with other dogs that do not posses that particular trait. In this way, the offspring will inherit the desirable trait from their parents, and if the selective breeding continues, then there will be a new dog type on the scene that will be unique by its trait/s.

7 0
3 years ago
HELP LLEASE IM ALMOST SO TIRED
Digiron [165]
The answer is B, or Randomization.

Explanation: Randomization minimizes the influence of bias by mixing up the probability of the results. It does not favor any one side.
5 0
2 years ago
Describe the situations in which a normal human cell would enter the cell cycle and undergo mitotic cell division. Explain how s
Ganezh [65]

Answer: An example of a specific case is when a skin lesion occurs. Through mitosis, new skin cells are generated to repair damaged tissue. These cells have to be genetically identical to each other. The spindle fibers are structures formed by microtubules extending from one pole to another to orient the duplicated chromosomes in the spindle, bringing them to the position they occupy during metaphase.

Explanation:

Mitosis is a process of cell division that occurs in eukaryotic cells, i.e. cells that have a nucleus where their genetic material is located. This process generates two identical cells with the same DNA, that is, with two identical nuclei, so it does not provide genetic variability except in case of specific mutations. The objective of mitosis is cell multiplication while preserving genetic information. But in general, in mitosis there is an equal distribution of the cell nucleus as well as the rest of the cell content.

The phases of mitosis are as follows:

  • Interface: The cell duplicates its organelles and its DNA to have twice everything before division.
  • Prophase: The nuclear membrane breaks, the chromosomes condense, the centrosome duplicates and migrates to the opposite poles of the cell forming microtubules. Also, fibers of the mitotic spindle are formed.  
  • Prometaphase: The microtubules invade the space where the genetic material is.
  • Metaphase: The replicated chromosomes line up in the middle of the cell, called the equatorial plane.
  • Anaphase: Microtubules separate chromosomes towards the opposite poles.  
  • Telophase: The nuclear envelope is re-formed from the remaining fragments of the original.
  • Cytokinesis: A cleavage groove is created in the common cytoplasm of the two new cells where the chromosomes were aligned. The cytoplasm is thus strangled until the membrane allows total separation.

<u>Mitosis is then a cellular process that occurs in multicellular organisms to repair damaged tissue, or for growth or development.</u> An example of a specific case is when a skin lesion occurs. When a person suffers an injury, many reactions take place in the repair process to repair the damage including inflammatory, proliferative, and remodeling phases.  <u>Through mitosis, new skin cells are generated to repair damaged tissue. These cells have to be genetically identical to each other, to have the same genetic fingerprint and the same function.</u>

The spindle fibers are structures formed by microtubules extending from one pole to another. The kinetochore microtubules attach to the kinetochore, a structure that forms at the centromere of each duplicated chromosome, <u>and orient the duplicated chromosomes in the spindle, bringing them to the position they occupy during metaphase and attracting the newly separated chromosomes to the poles during anaphase</u>.

5 0
3 years ago
Which of these statements are true about scientific theories and hypotheses?
slega [8]
The answer is A hypothesis is tentative statement and A theory has a strong predictive power.
( I hope this is right :) )
4 0
3 years ago
Read 2 more answers
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