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murzikaleks [220]
4 years ago
5

Describe one observation that supports the theory that

Biology
1 answer:
PIT_PIT [208]4 years ago
3 0

Answer:

The presence of organelle DNA in mitochondria and chloroplast supports the  theory that mitochondria and chloroplast originated as independent prokaryotic organism.

Explanation:

  • The more well documented and generally accepted theory for the origin of eukaryotic organelles is Endosymbiotic Theory. (Margulis 1970).
  • Recent evidences justify that organelles have originated from the endosymbiotic association  of ingested aerobic and and photosynthetic prokaryote, the precursors of mitochondria and chloroplast  respectively.
  • Molecular data have played an important role in supporting the xenogenous origin rather than autogenous origin of organelles.
  • The idea of independent existence of mitochondria and chloroplast are: they are replicators; they carry genetic information; they have protein synthesising machinery; they have ribosome of prokaryotic type.
  • The prokaryotic or bacterial origin of mitochondria and chloroplast is supported by the fact like their DNA is simple ,closed and circular with single point of origin; DNA controls the synthesis of  their rRNA and tRNA etc.; They have their own ribosome; antibiotic specificity.

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STatiana [176]

Answer: c. Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.

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6 0
4 years ago
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Glucose has _____ carbon atoms. 12 6
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3 years ago
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Why are there more mice than lions in an african ecosystem?
r-ruslan [8.4K]
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7 0
4 years ago
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Calculate phenotype frequencies in 5th generation. Record in Lab Data
mojhsa [17]

Answer:

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f (Typica) = 878/ 932

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8 0
3 years ago
Which connective tissue layer directly surrounds each axon in a nerve?
gregori [183]

Answer:

Endonerium

Explanation:

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3 years ago
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