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Mice21 [21]
3 years ago
14

Why is altruistic behavior not very common?

Biology
1 answer:
Vikentia [17]3 years ago
6 0

Answer:

for any behavior to survive natural selection, it needs to help an animal or its genetic material

Explanation:

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The false answer is D.) an introduced species generally helps balance an ecosystem

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anyanavicka [17]
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Describes the structure of nucleic acids
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The secondary structure is responsible for the shape that the nucleic acid assumes. The bases in the DNA are classified as purines and pyrimidines. ... A purine base always pairs with a pyrimidine base (guanine (G) pairs with cytosine (C) and adenine (A) pairs with thymine (T) or uracil (U)).

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Cyclin B1, a key cell cycle regulatory protein in vertebrates, is mostly cytosolic before mitosis. Early in mitosis, however, th
Ludmilka [50]

Answer:

Phosphorylation within the nuclear export signal interferes with the function of the  signal.

Explanation:

In biochemistry, phosphorylation is the addition of a phosphate group (PO4) to a protein or other molecule. Phosphorylation is a major player in protein regulation mechanisms, preventing protein-catalyzed reaction product from accumulating in the body causing problems.

However, in some cases phosphorylation may cause nuclear accumulation of a protein in the nucleus of the cell. An example of this is the protein shown in the question above. In this case, phosphorylation in the nuclear export signal interferes with the signal function, resulting in protein accumulation in the nucleus.

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4 years ago
What is one way human beings have disrupted the sulfur cycle?
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A/D

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D, Fertilizers put more sulfur in the ground than their should be.

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