Genetics and Inheritance (Grade 12 NSC Matric Life Sciences): Quizzes

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Mitochondrial DNA and tracing genetic links
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Where in the cell is mitochondrial DNA located?

In the mitochondria

How many genes does mitochondrial DNA contain?

3737 genes

Does mitochondrial DNA undergo crossing over during cell division?

No, it does not

How is mitochondrial DNA inherited?

Only from the mother

What special characteristic does the mtDNA mutation rate have?

It is predictable and regular

Approximately when did Mitochondrial Eve live?

150,000150,000 years ago

Where did Mitochondrial Eve live?

In East Africa

Approximately when did Nuclear Adam live?

60,00060,000 years ago

What does a greater number of mutations between two mtDNA samples indicate?

Longer ago common ancestor

Which offspring receive the mother's mitochondrial DNA?

Both male and female

Explore Grade 12 NSC Matric Life Sciences Revision Notes by Topics

Genetics and Inheritance

Evolution by Natural Selection

Human Evolution

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Genetics and Inheritance

Evolution by Natural Selection

Human Evolution

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Genetics and Inheritance

Evolution by Natural Selection

Human Evolution

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Genetics and Inheritance

Evolution by Natural Selection

Human Evolution

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