The ability to clone plants and animals from single specialized cells demonstrates that genes are not lost or permanently altered during development.
-Scientists have cloned some animals by injecting a nucleus from an early embryo into an enucleated egg cell. The resulting animals are genetically identical with the donor of the nucleus. Does this outcome prove that genetic material is not lost during evelopment? Why or why not?

Question

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The Answer is No, it does not prove that genetic material is not lost during development, because differentiation has not yet taken place in an early embryo. The early embryo would likely still contain all its genes and could therefore give rise to a complete animal. The use of specialized cells, such as a cell from an udder, does prove that genes are not lost during development because, if they were lost, there would be no cloned animal.

The Ability to Clone Plants and Animals from Single Specialized