Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

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Chapter 15, Problem 2MCQ

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Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

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Which of the following best explains the role mutations play in natural selection?A. Most mutations are negative and result in the extinction of the entire speciesB. Mutations may appear for one or two generations, but they usually disappear quickly.C. If the environment changes, an existing organism develops a mutation that will help them to survive.D. Some mutations give individuals an advantage in their environment, allowing them to survive and reproduce.D is my answer is it correct?

Which of the following does not apply to mutations?a. They occur to cause adaptive changes in response to the environment.b. They are usually either harmful or neutral.c. They are only inherited if they occur in a sperm or egg cell.d. They often occur when DNA is copied.

Darwin’s Theory of Natural Selection occurs in 4 steps.Which of the following is NOT one of these four steps?a. Differentiationb. Selectionc. Competitiond. Overproduction

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Chapter 15, Problem 2MCQ

Summary Introduction

Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

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Chapter 15, Problem 2MCQ

Summary Introduction

Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

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Chapter 15, Problem 2MCQ

Summary Introduction

Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

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Answer 5

Chapter 15, Problem 2MCQ

Summary Introduction

Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

Answer 6

Chapter 15, Problem 2MCQ

Summary Introduction

Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

Answer 7

Chapter 15, Problem 2MCQ

Summary Introduction

Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

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Ch. 15.1 - How were conditions on Earth before life began...Ch. 15.1 - Prob. 2MC Ch. 15.1 - Prob. 3MC Ch. 15.1 - Prob. 4MC Ch. 15.2 - How might the endoplasmic reticulum, nuclear...Ch. 15.2 - Prob. 2MC Ch. 15.2 - Prob. 3MC Ch. 15.3 - Prob. 1MC Ch. 15.3 - What types of organisms flourished in the...Ch. 15.3 - How did Palaeozoic life diversify during the...

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

Solution Summary: The author explains that RNA molecules must undergo mutations and replication for natural selection to occur in a "RNA world".

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Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

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Chapter 15 Solutions

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

Solution Summary: The author explains that RNA molecules must undergo mutations and replication for natural selection to occur in a "RNA world".

Concept explainers

Videos

Introduction: Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.

Want to see the full answer?

Chapter 15 Solutions

Introduction:

Some investigators suggest that RNA were the first genetic material. They have used the term “RNA world” to describe this phenomenon.