Heredity
Chapter Name : Heredity And Evolution |
Sub Topic Code : 103_10_09_02_03 |
Topic Name : Heredity |
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Sub Topic Name : Rules For The Inheritance Of Traits-Mendel's Contribution |
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Introduction
Some traits are inherited from one generation to another while some are not, Mendel, through his experiments on pea plant demonstrated which are inherited and which are not.
Pre-Requisites:
What are inherited traits?
Activity:
Cross a TT plant with a tt plant virtually in your notebook and work out the gene combinations of the first progeny F1. See which traits are inherited and exhibited in the first progeny.
Real Life Question:
If in a couple, the woman is tall and the man is short, then will their first child be short or tall?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Trait | Any feature, inherited at birth or acquired later. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Read Mendel’s experiment. Try to work out the rules yourself. | Understanding the rules of inheritance. |
Places to visit :
Botanical Garden
Practical examples around us
| Examples | Explainations |
|---|---|
| If one of the parents of a child is tall, there are good chances of the child being tall. If both the parents are tall, the chances of the child being tall are better than good! |
What you learn in Theory:
Which traits are inherited by the progeny?
What you learn in Practice:
If my father is dark-complexioned and my mother is also dark complexioned, then no matter how much fairness cream I apply, the chances are that I will stay dark complexioned.