Answered: The following diagram outlines how the…

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter11: How Cells Reproduce

Section: Chapter Questions

Problem 1DAA: HeLa Cells Are a Genetic Mess HeLa cells can vary in chromosome number. Defects in proteins that...

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The following diagram outlines how the process of cloning a sheep was accomplished.

Cloning is the process of creating a genetically identical copy of another individual. With Dolly, the first cloned mammal, an egg cell was removed from a donor (B) and the nucleus was removed from the egg cell. Then cells from a sheep's mammary gland were removed from a second donor (A). The nucleus of one of the cells from the mammary gland was fused with the enucleated egg cell using an electrical pulse. The fused cell underwent cell division and at the blastocyst stage was implanted into a surrogate mother sheep.

The percentage of genetic material that Dolly (the clone) had in common with Donor A is

Select one:

a. 25%

b. 50%

c. 100%

d. 0%

A
Sheep
Female
Sheep
Female
Body cell
taken from
Sheep A
Egg cell
taken from
Sheep B
DNA extracted
Nucleus
removed
DNA from Sheep A
fused with egg cell
from Sheep B
Fused cell develops into
embryo which is placed
in uterus of foster mother
Sheep
Female
A
Lamb is clone
of Sheep A

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