Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

Describe two methods to calculate the age of fossils?
Asked by | 15 Feb, 2012, 10:38: PM
answered-by-expert Expert Answer
There are two ways of estimating the age of fossils:
i) First is the relative method. If we dig into the earth and start finding fossils, it is reasonable to suppose that the fossils we find closer to the surface are more recent than the fossils we find in deeper layers.
ii) The second way of dating fossils is by detecting the ratios of different isotopes of the same element in the fossil material
Answered by | 16 Feb, 2012, 09:40: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Biology
1+1
question image
Asked by sathishkumar.sk6680 | 26 Jan, 2024, 09:35: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
mono hybridisation
Asked by vramesh.kumar1804 | 09 Jan, 2024, 10:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
what is hereditary
Asked by navinkumar785790 | 17 Jun, 2023, 10:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Write the name of indicated part in diagram: Human Jaw    
question image
Asked by paresh0311 | 20 Mar, 2023, 02:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Two human beings who can both roll their tongues produced 11 children. 3 of these children could not roll their tongues and 8 children could roll their tongues. (a) Which trait (rolling or not rolling) is controlled by the recessive allele? (b) State all possible genotypes of the F1 generation of the cross. Show the inheritance of the tongue rolling in humans in the given example using a suitable cross. What percentage of offspring will show the same genotype as the parents? OR (c) If one of the parents could not roll their tongue, with the help of a cross, calculate the ratio of tongue- rollers to non-tongue-rollers in the off springs.​
Asked by Venkata Raman | 06 Feb, 2023, 06:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
In human, the allele for brown eyes (B) is dominant over that for blue eyes (b). A brown eyed woman marries a blue eyed man, and they have six children. Four of the children are brown eyed and two of them are blue eyed. a) What is the genotype of blue eyes offspring? b) What is the woman's genotype? c) Mention the above process of inheritance in a flow chart.
Asked by swetalinasamantaray022 | 29 Dec, 2022, 01:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
explain law of inheritance
Asked by nitusinghparihar309 | 26 Dec, 2022, 09:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
importance of variation?
Asked by blessybhatia09 | 17 Apr, 2022, 10:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
a man with blood group A ,black color hair is crossed with woman with blood group O , brown colour hair show the monohybrid cross
Asked by srestasingh7 | 26 Dec, 2021, 10:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
what is evolution
Asked by aaazwasi | 25 Jun, 2021, 12:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×