1. Which of the following pairs share 50% of their genes? Any two siblings A pair of dyzogotic twins A pair of monozygotic twins a and b 2. Regarding types of multiple pregnancy, which of the following are true? a. Dizygotic twins result from fertilization of different oocytes by the same sperm. b. Monozygotic twins result from mitotic division of a single zygote into 'identical' twins. c. Dizygotic twins result from the division of a single fertilized egg. d. Monozygotic twins result from 2 egg cells merged together, eventually fertilized by a sperm cell. 3. Fraternal twins make up approximately of the twin population.

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter18: Dna Technologies: Making And Using Genetically Altered Organisms, And Other Applications
Section: Chapter Questions
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Activity 9. Let us try to check your understanding of the discussion. Read the questions
carefully. Encircle the letter that corresponds to the correct answer.
1. Which of the following pairs share 50% of their genes?
Any two siblings
A pair of dyzogotic twins
A pair of monozygotic twins
a and b
2. Regarding types of multiple pregnancy, which of the following are true?
a. Dizygotic twins result from fertilization of different oocytes by the same sperm.
b. Monozygotic twins result from mitotic division of a single zygote into 'identical' twins.
c. Dizygotic twins result from the division of a single fertilized egg.
d. Monozygotic twins result from 2 egg cells merged together, eventually fertilized by a sperm
cell.
3. Fraternal twins make up approximately.
of the twin population.
Transcribed Image Text:Let's Check Activity 9. Let us try to check your understanding of the discussion. Read the questions carefully. Encircle the letter that corresponds to the correct answer. 1. Which of the following pairs share 50% of their genes? Any two siblings A pair of dyzogotic twins A pair of monozygotic twins a and b 2. Regarding types of multiple pregnancy, which of the following are true? a. Dizygotic twins result from fertilization of different oocytes by the same sperm. b. Monozygotic twins result from mitotic division of a single zygote into 'identical' twins. c. Dizygotic twins result from the division of a single fertilized egg. d. Monozygotic twins result from 2 egg cells merged together, eventually fertilized by a sperm cell. 3. Fraternal twins make up approximately. of the twin population.
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