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Question

Mitochondria and plastids have their own DNA (genetic material). What is known about their fate during nuclear division like mitosis?

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Solution

Fate of mitochondria and plastid

Though mitochondria and chloroplast have their own DNA, they do not contribute to nuclear division. Their genetic material is considered as extrachromosomal DNA as it is not present inside the nucleus.

Distribution of mitochondria and plastid after mitosis

During cytoplasmic division (cytokinesis), these organelles get distributed randomly between the two daughter cells.

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Question 26

Mitochondria and plastids have their own DNA (genetic material). What is known about their fate during nuclear division like mitosis?

Q. If mitochondria and plastids have there own genetic material and can produce their own proteins then why can they not be independent like cells?

Q. Organelles like plastids and mitochondria have their own genetic material. So when separated from from the cell can they survive individually ??

Q. Chloroplasts are the double-membraned plastids having their own genetic material.

Assertion Mitochondria and chloroplast are semi- autonomous organelles.
Reason They have their own genetic material which codes for their proteins.

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