Woolly mammoths have been extinct for about 10,000 years, but we often find their well- preserved remains in Siberian permafrost. Research groups are now planning to use SCNT to resurrect these huge elephant- like mammals. No mammoth eggs have been recovered so far, so elephant eggs would be used instead. An elephant would also be the surrogate mother for the resulting embryo. The researchers may try a modified SCNT technique used to clone a mouse that had been dead and frozen for sixteen years. Ice crystals that form during freezing break up cell membranes, so cells from the frozen mouse were in bad shape. Their DNA was transferred into donor mouse eggs, and cells from the resulting embryos were fused with mouse stem cells. Four healthy clones were born from the hybrid embryos. What are some of the pros and cons of cloning an extinct animal?

Biology Today and Tomorrow without Physiology (MindTap Course List)
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Chapter6: Dna Structure And Function
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Woolly mammoths have been extinct for about
10,000 years, but we often find their well- preserved
remains in Siberian permafrost.


Research groups are now planning to use SCNT
to resurrect these huge elephant- like mammals.


No mammoth eggs have been recovered so far,
so elephant eggs would be used instead. An
elephant would also be the surrogate mother for
the resulting embryo. The researchers may try
a modified SCNT technique used to clone a
mouse that had been dead and frozen for sixteen
years. Ice crystals that form during freezing
break up cell membranes, so cells from the
frozen mouse were in bad shape. Their DNA was
transferred into donor mouse eggs, and cells
from the resulting embryos were fused with
mouse stem cells. Four healthy clones were born
from the hybrid embryos.

What are some of the
pros and cons of cloning an extinct animal?

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