Accumulation Of Variation During Reproduction
Chapter Name : Heredity And Evolution |
Sub Topic Code : 103_10_09_01_01 |
Topic Name : Accumulation Of Variation During Reproduction |
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Sub Topic Name : Accumulation Of Variation During Reproduction |
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Introduction
Progeny shows some genetic variation from their parents, which variations have more chances of survival and which decreases?
Pre-Requisites:
What is variation? What is reproduction?
Activity:
Observe the DNA sequences of various species of animals and see the variations.
Real Life Question:
What is the need of cell wall, when selectively permeable membrane already exists?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Variation | Difference in the genes. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Find out the difference in the DNA of humans and chimpanzees | Understanding how same/different are the two DNAs/ |
Places to visit :
Science centers
Practical examples around us
| Examples | Explainations |
|---|---|
| We don’t look exactly like our parents. |
What you learn in Theory:
Variation introduces new features, sometimes good, sometimes bad.
What you learn in Practice:
Individuals look dissimilar to each other due to variation occurring during reproduction or any other time.