There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

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Answer 1

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Chapter 11, Problem 4TYS

Summary Introduction

Introduction: There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

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Answer 2

Question

Chapter 11, Problem 4TYS

Summary Introduction

Introduction: There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

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Answer 3

Question

Chapter 11, Problem 4TYS

Summary Introduction

Introduction: There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

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Answer 4

Question

Chapter 11, Problem 4TYS

Summary Introduction

Introduction: There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

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Answer 5

Chapter 11, Problem 4TYS

Summary Introduction

Introduction: There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

Answer 6

Chapter 11, Problem 4TYS

Summary Introduction

Introduction: There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

Answer 7

Chapter 11, Problem 4TYS

Summary Introduction

Introduction: There are two types of twins – identical and non-identical twins. Identical twins are monozygotic and non-identical twins are dizygotic. Normally, the union of a mother’s egg and a father’s sperm, that is, fertilization forms a diploid zygote. In some cases, the zygote splits into two and forms identical twins. In the case of non-identical twins, two eggs are fertilized by two sperm.

Answer 8

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Answer 9

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Answer 11

Ch. 11 - Prob. 1TYS Ch. 11 - Prob. 2TYS Ch. 11 - Prob. 3TYS Ch. 11 - Prob. 4TYS Ch. 11 - Prob. 5TYS Ch. 11 - Prob. 6TYS Ch. 11 - Prob. 7TYS Ch. 11 - Prob. 8TYS Ch. 11 - Prob. 9TYS

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Chapter 11 Solutions