Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

10 Questions

3 Views

DNA Mutations and Repair Mechanisms

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main mechanism by which new genes/functions arise according to the text?

Genome reduction

Point mutations

Gene duplication (correct)

Horizontal gene transfer

Which of the following is NOT mentioned as a factor contributing to the evolution of bacterial genomes?

Gene acquisition

Ribosomal RNA synthesis (correct)

Mutation

Genome reduction

According to the 'Mutation during non-functionality' model, how can new genes emerge?

By random point mutations

By horizontal gene transfer from other organisms

By exclusively arising from de novo creation

Through gene duplication and accumulation of mutations in the extra copy (correct)

Which term describes a scenario where an extra copy of an existing gene is produced during cell division?

Gene amplification Signup and view all the answers

What is Susumu Ohno's view on the origin of new genes?

'Each new gene must have arisen from an already existing gene.' Signup and view all the answers

Which process involves loss of a duplicated gene due to mutation and drift?

Gene loss Signup and view all the answers

In the context of gene duplication, what does t = 0 represent?

The initial duplication event Signup and view all the answers

How do mutations lead to the emergence of new functions in proteins according to the text?

'Sometimes mutations can impart a new function on protein products.' Signup and view all the answers

'In a strict sense, nothing in evolution is created de novo.' Who is associated with this statement?

'Susumu Ohno' Signup and view all the answers

'Mutation during non-functionality' Model proposes that new genes arise when:

'Extra copies of existing genes accumulate beneficial mutations.' Signup and view all the answers