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gulaghasi [49]
4 years ago
8

What is LUCA and how long ago did LUCA exist? What is the general interpretation of the observation that members of a single gen

e family are found in all three domains of life?
Biology
1 answer:
s2008m [1.1K]4 years ago
4 0

LUCA the last universal common ancestor; it is exist  in 3.5 billon years ago in the paleoarchean era, a few hundred million years after the earlier fossils evidence of life.

<u>Explanation:</u>

It is the single celled bacteria like organisms living in volcanic era. The three domain of the life are Archaea, bacteria, Eukaryotas. The observation that member of the single gene family are found in the all three domain of life.

It is suggested that the progenitor gene that give rise to the family member existed in the LUCA , before the time that the three domain diverged.

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In human audition, the vibration of the ossicles is triggered by the vibration of the tympanic membrane (the eardrum) and transmitted directly to the fluid and membranes of the inner ear.

The inner ear is shaped like a snail with a thousands of tiny hair cells in it and it is called the cochlea. Hair cells change the vibrations into electrical signals that are sent to the brain through the auditory nerve.


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4 years ago
What is the best explanation for a BbCc x bbcc cross producing offspring in a 5:5:1:1 phenotypic ratio
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Answer:

These genes are linked.

Explanation:    

You will find the complete answer and explanation in the attached file due to technical problems.

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6 0
3 years ago
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cluponka [151]

Answer:

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Explanation:

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