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Tasya [4]
3 years ago
9

What recent experimental evidence suggests that all animal appendages may be homologous?

Biology
1 answer:
4vir4ik [10]3 years ago
8 0

Answer:The discovery of the "distal-less," or Dll, gene in many different phyla.

Explanation: Appendages of animals are any external attachment or extension of one or two body parts of an organism in order for it to be able to effectively perform its responsibilities.

The morphological and functional changes or evolution of appendages is responsible for the adaptive radiation of tetrapods, arthropods and winged insects. Recent studies tends to show that all animal appendages may be homologous through the discovery of the "distal-less," or Dll, gene in many different phyla.

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4 0
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Hypothalmus hannels information from sensory nerves to the endocrine system via the ________ gland.
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Which weathering process is mechanical?
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Answer:

D. Thermal expansion

Explanation:

MECHANICAL WEATHERING

can be defined as the gradual disintegration of rock into smaller particles which later turn into soil. when mechanical weathering occurs, it doesn't change the chemical composition of the rock. mechanical weathering are caused by abrasion by ice water, thermal expansion, root of trees growing on the rock.

THERMAL EXPANSION

This is a mechanical  process of weathering. during the day when there is high temperature and hits the rock surface, the rock absorbs heat expands . at night when the temperature drops the rock contrast. Repeated action of expansion and contraction results in gradual breakdown of rock to form soil.

4 0
4 years ago
Five differences between mankind and plants<br>​
wel

Answer:

Let me count a few of the ways…

  1. Plants do not take life of any kind to sustain their own lives.
  2. Plants harvest atmospheric carbon dioxide (a waste product), water and sunlight (both ubiquitous and freely available) to produce within themselves the food which nourishes them.
  3. Plants are born and die in the same place.
  4. Plants have yet to start a war, perpetrate a genocide, or kill members of their own species over disagreements about mere ideas.
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The third level of cell organization is the ____
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Answer:

Organs is correct

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