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Cloning

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Question 30

The diagram shows the stages in the cloning process of a prize-winning dairy cow using somatic cell nuclear transfer (SCNT).

SCNT Cow Cloning Diagram

a.

Complete the table by identifying the stage Roman numeral (I to VIII) at which each event takes place.

  • Event 1: Cell division occurs to form a blastocyst
  • Event 2: The embryo is implanted into the uterus of a surrogate mother
  • Event 3: An unfertilised egg cell is harvested from a female cow
[3]
b.

Which cow in the diagram is the clone?

  • A: Cow P
  • B: Cow Q
  • C: Cow R
  • D: Calf S
[1]
c.

Which cows are genetically identical?

  • A: Cow P, Cow Q, Cow R, and Calf S
  • B: Cow P and Cow Q
  • C: Cow P and Calf S
  • D: Cow Q and Calf S
[1]

Cloning Questions

  1. IGCSE
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  3. /Cloning