In 1997, Dolly the Sheep Was Cloned

question 30

Multiple Choice

In 1997, Dolly the sheep was cloned. Which of the following processes was used?

• A) use of mitochondrial DNA from adult female cells of another ewe
• B) replication and dedifferentiation of adult stem cells from sheep bone marrow
• C) separation of an early stage sheep blastula into separate cells, one of which was incubated in a surrogate ewe
• D) fusion of an adult cell's nucleus with an enucleated sheep egg, followed by incubation in a surrogate
• E) isolation of stem cells from a lamb embryo and production of a zygote equivalent

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Academic Work

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Poverty Rates

The proportion of a population living below the poverty line, indicating the level of economic hardship or lack of access to basic necessities.

Same-sex Parent Households

Families where children are raised by parents of the same gender, either biological or adoptive.

Slave Owners

Individuals who owned slaves in the past, typically in contexts where slavery was legally recognized and institutionalized.