try n open the presentation in office 2010 .Useful for students of class 10 (CBSE)
Size: 3.33 MB
Language: en
Added: Apr 23, 2014
Slides: 9 pages
Slide Content
Acquired a nd Inherited Traits
Traits are defined as any observable feature of an organism . They may ACQUIRED or INHERITED. What are traits?
An acquired characteristic is a non-heritable change in function of living biotic material caused after birth by disease, injury etc. Acquired Traits
Tanning of skin , it doesn’t causes any change in the germ cell of DNA and hence Is not passed onto next generation. EXAMPLE OF ACQUIRED TRAIT
Inherited traits are those which are inherited from parents. These usually include physical traits, including eye color, height, skin tone, hair color, and susceptibility to certain diseases like diabetes. DNA is the material responsible for inherited traits in human beings Inherited traits
Some traits are both! Skin color is a combination trait:- Inherited part: Receive genes for skin color from parents Acquired part: Amount of time in the sun determines level of tan
Earlobe :- In some people, the ends of the earlobes are attached to the skin on the neck while others have detached earlobes. Dimples The presence of dimples has a dominant pattern of inheritance, which means that offspring will have dimples if they receive dominant alleles from both parents or inherit a dominant allele from either parent. EXAMPLE OF INHERITED TRAIT