Advertisements
Advertisements
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
Concept: undefined >> undefined
Differentiate between male and female heterogamety.
Concept: undefined >> undefined
Advertisements
Since October 02, 2014 “Swachh Bharat Abhiyan” has been launched in our country.
- Write your views on this initiative giving justification.
- As a biologist name two problems that you may face while implementing the programme in your locality.
- Suggest two remedial methods to overcome these problems.
Concept: undefined >> undefined
Explain the mechanism of sex determination in birds.
Concept: undefined >> undefined
Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
Concept: undefined >> undefined
List all the wastes that you generate, at home, school or during your Trips to other places, could you very easily reduce? Which would be Difficult or rather impossible to reduce?
Concept: undefined >> undefined
Match the items given in columns A and B:
| Column ‘A’ | Column ‘B’ | ||
| (a) | Catalytic converter | (1) | Particulate matter |
| (b) | Electrostatic precipitator | (2) | Carbon monoxide and nitrogen oxides |
| (c) | Earmuffs | (3) | High noise level |
| (d) | Landfills | (4) | Solid wastes |
Concept: undefined >> undefined
What measures as an individual, you would take to reduce environmental pollution?
Concept: undefined >> undefined
Explain the mechanism of 'sex determination' in birds. How does it differ from that of human beings?
Concept: undefined >> undefined
Why did T. H. Morgan select Drosophila melanogaster to study sex linked genes for his lab experiments ?
Concept: undefined >> undefined
What is joint forest management?
Concept: undefined >> undefined
How does a desert plant adapt to the dry, warmer environmental conditions ?
Concept: undefined >> undefined
What is heterogamety ? Explain the mechanism of sex determinatin in Drosophila.
Concept: undefined >> undefined
XO type of sex determination and XY type of sex determination are examples of ____________.
Concept: undefined >> undefined
How is sex determined in human beings?
Concept: undefined >> undefined
Sex is determined in human beings ______.
Concept: undefined >> undefined
The ‘X’ body of Henking was observed in ______.
Concept: undefined >> undefined
ZZ/ZW type of sex determination is seen in ______.
Concept: undefined >> undefined
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
Concept: undefined >> undefined
Number of autosomes present in liver cells of a human female is ______.
Concept: undefined >> undefined
