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pychu [463]
3 years ago
15

What is an over-reactive response by the immune system called?

Biology
2 answers:
Colt1911 [192]3 years ago
5 0

Answer:

In cases of immune system overactivity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections.

Explanation:

aalyn [17]3 years ago
3 0
I agree with what they have as well
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Need somebody to help!!!!
Alex777 [14]

Answer:

I would say the first option

Explanation:

8 0
2 years ago
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Which statement best discribes cancer cells
Debora [2.8K]

Explanation:

cells which can divide an unlimited number of times by mitosis

6 0
3 years ago
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Which evidence has led scientists to conclude that there are different layers within Earth's interior?
Elenna [48]

Answer:

Explanation:

1) análisis de datos de ondas sísmicas

8 0
3 years ago
An alligator lives in a swamp with deer, birds, fish, trees, and different types of plants. The alligator eats a bird that eats
klio [65]

Answer:

the heat from the air in the umm i am not sure tho

Explanation:

sorry I get it qrong

6 0
3 years ago
You are involved in an experiment involving fluorescent painting of chromosomes. You observe the following in a nucleus experien
Galina-37 [17]

Answer:

It seems that a reciprocal translocation is going on.

Explanation:

A translocation occurs when a chromosomal fragment changes its location in the same chromosome from the original to a new one. Or when it leaves the chromosome to re-locate in a new different chromosome.

According to this, there are different types of translocations:

  • Intrachromosomal translocations:
  1. Intra-radial: the change in position occurs in the same arm of the chromosome. For instance, 123.456789 → 123.478569
  2. Extra-radial: The change in position occurs from one arm to the other of the same chromosome. For instance, 123.456789 → 15623.4789
  • Extrachromosomal translocations:
  1. Transposition: not reciprocal interchange. The fragment leaves a chromosome to re-locate in another chromosome. The other chromosome does not send any fragment to the first one.
  2. Reciprocal translocation: There is a reciprocal interchange. A fragment of chromosome A goes to B, and a fragment of chromosome B goes to A.

Reciprocal translocations might be:

  1. Fraternal: the interchange occurs among homologous chromosomes
  2. External: the interchange occurs among non-homologous chromosomes

Reciprocal translocations are easily recognized during meiosis because an association between four chromosomes can be observed.  This association is a quadrivalent structure.

During metaphase 1, the centromeres involved in the quadrivalent originate centromeric co-orientation or disjunction.

4 0
3 years ago
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