Class 9 Exam > Class 9 Videos > Crash Course: Class 9 (Hinglish) > Chromosomes
Chromosomes Video Lecture | Crash Course: Class 9 (Hinglish)
FAQs on Chromosomes Video Lecture - Crash Course: Class 9 (Hinglish)
| 1. What are chromosomes and what are their functions? |  |
Chromosomes are thread-like structures made up of DNA and proteins found in the nucleus of cells. They carry genetic information in the form of genes. The main function of chromosomes is to ensure the accurate transmission of genetic material from one generation to the next during cell division. They also play a role in determining an individual's traits and characteristics.
| 2. How many chromosomes are present in a human cell? | |
A human cell typically contains 46 chromosomes, arranged in 23 pairs. These pairs consist of 22 pairs of autosomes (non-sex chromosomes) and 1 pair of sex chromosomes. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).
| 3. What happens when there is an abnormality in the number or structure of chromosomes? | |
Abnormalities in the number or structure of chromosomes can lead to various genetic disorders or conditions. Some examples include Down syndrome, where there is an extra copy of chromosome 21, and Turner syndrome, where females are born with only one X chromosome. These abnormalities can result in physical and developmental differences in individuals.
| 4. How are chromosomes inherited? | |
Chromosomes are inherited in a process called meiosis. During meiosis, the parent cell's chromosomes duplicate and then divide twice, resulting in four daughter cells. Each daughter cell receives a unique combination of chromosomes, with half of the genetic material coming from the mother and the other half from the father. This process ensures genetic diversity and the passing on of traits from one generation to the next.
| 5. Can changes occur in chromosomes over time? | |
Yes, changes can occur in chromosomes over time. These changes, known as mutations, can happen spontaneously or as a result of external factors such as radiation or exposure to certain chemicals. Mutations can alter the structure or number of chromosomes, leading to genetic disorders or variations in traits. However, not all chromosome changes are harmful and some may even contribute to genetic diversity and evolution.
About this Video
|
4K Views |
|
4.74/5 Rating |
|
Nov 23, 2024 Last updated |
Video Description: Chromosomes for Class 9 2024 is part of Crash Course: Class 9 (Hinglish) preparation.
The notes and questions for Chromosomes have been prepared according to the Class 9 exam syllabus.
Information about Chromosomes covers all important topics for Class 9 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Chromosomes.
Introduction of Chromosomes in English is available as part of our Crash Course: Class 9 (Hinglish) for Class 9 & Chromosomes in
Hindi for Crash Course: Class 9 (Hinglish) course. Download more important topics related with notes, lectures and mock test series for
Class 9 Exam by signing up for free.
Description
Video Lecture & Questions for Chromosomes Video Lecture | Crash Course: Class 9 (Hinglish) - Class 9 full syllabus preparation | Free video for Class 9 exam to prepare for Crash Course: Class 9 (Hinglish).
Information about Chromosomes
Here you can find the meaning of Chromosomes defined & explained in the simplest way possible.
Besides explaining types of Chromosomes theory, EduRev gives you an ample number of questions to practice Chromosomes tests,
examples and also practice Class 9 tests.
|
Explore Courses for Class 9 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Important questions
,Summary
,Previous Year Questions with Solutions
,Free
,Chromosomes Video Lecture | Crash Course: Class 9 (Hinglish)
,MCQs
,Viva Questions
,Objective type Questions
,Sample Paper
,video lectures
,shortcuts and tricks
,Chromosomes Video Lecture | Crash Course: Class 9 (Hinglish)
,study material
,ppt
,Semester Notes
,Chromosomes Video Lecture | Crash Course: Class 9 (Hinglish)
,practice quizzes
,Extra Questions
,Exam
,mock tests for examination
,past year papers
,
Study Chromosomes on the App
Students of Class 9 can study Chromosomes alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Chromosomes,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Chromosomes is prepared as per the latest Class 9 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup