List in tabular form two distinguishing features between acquired traits and inherited traits, with one example of each.
List in tabular form two distinguishing features between acquired traits and inherited traits, with one example of each.
The distinguishing features between acquired and inherited traits are as follows:
| Feature | Inherited Traits | Acquired Traits |
|---|---|---|
| Origin | These traits are controlled by specific sections of (genes) and are present from birth. | These traits are developed by an individual during their lifetime in response to the environment. |
| Transmission | These traits are passed from parents to the next generation through germ cells. | These traits cannot be passed on to the progeny as they do not affect the of germ cells. |
| Example | Eye color or shape of the earlobe. | Learning to play a musical instrument or weight loss due to starvation. |
Marking Scheme
- 11 mark for correctly distinguishing origin (Genetic vs. Environmental).
- 21 mark for correctly distinguishing transmission (Passed to progeny vs. Not passed).
- 30.5 mark for a valid example of an inherited trait.
- 40.5 mark for a valid example of an acquired trait.
Hint
Think about whether a change in a person's physical skill (like swimming) or a change in their genetic makeup (like blood group) is passed to their children.
Quick Oral Answer
Acquired traits are not inherited because they only affect somatic cells and do not cause any change in the of the germ cells (gametes), which are the only cells that contribute genetic information to the next generation.
Analysis & Explanation
Inherited traits are those that are coded in the of an organism's germ cells (gametes). Because they are part of the genetic material, they are transmitted to offspring during reproduction. In contrast, acquired traits are changes in the somatic (non-reproductive) tissues caused by environmental factors, use or disuse of organs, or experiences. Since these changes do not alter the genetic code in the sperm or eggs, they die with the individual and are not inherited. Note: While the provided text focuses on 'Chemical Reactions and Equations', this question pertains to the biological principles of heredity.
Common Mistakes
- 1Assuming that physical changes like muscle building or scars can be inherited by children.
- 2Confusing the term 'acquired' with 'congenital' (traits present at birth but not necessarily genetic).
Interesting Facts
August Weismann disproved the theory of inheritance of acquired characteristics by cutting off the tails of mice for 21 generations; the 22nd generation was still born with full-length tails.
Spotted a mistake or something unclear?
Tell us — we fix reported answers fast.
Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2012?
This question carries 3 marks in the CBSE Class 10 Science 2012 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Heredity" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Acquired and Inherited Traits" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2012 paper?
This is a Short Answer question from Section A in the CBSE Class 10 Science 2012 paper.