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Why do all the gametes formed in human f...

Why do all the gametes formed in human females have an X- chromosome?

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Why do males have Penis?

Assertion : In pigeons, females are heterogametic and males are homogametic Reason : In pigeons, females have ZW sex chromosomes and males have ZZ sex chromosomes.

At what stage of development are the gametes formed in new born male and female?

Why do gases not have fixed shape?

Assertion :Human female are homogametic Reason:In female,the gametes or the eggs formed are similar in their sex chromsome type.

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SURA PUBLICATION-SELF-EVALUATION TEST 4 MARKS-ANSWER ANY QUESTIONS (BIOLOGY)
  1. Write a short note on editor and its types?

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  2. A family has 3 three cars and can afford to buy fuel. They prefer to g...

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  3. How does insulin deficiency occur ?

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  4. Octopus, cockroach and frog all have eyes. Can we group these animals ...

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  5. How does insulin deficiency occur ?

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  6. Octopus, cockroach and frog all have eyes. Can we group these animals ...

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  7. What are the consequences of deforestation?

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  8. (a) State the law of purity of gametes or the law of segregation. (b...

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  9. Write a note on 'Visual Communication Device'.

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  10. A very small population of a species faces a greater thread of extinct...

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  11. How will you prevent soil erosion?

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  12. (a) What is Goldilock zone for life? (b) Explain chemical evolution ...

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  13. Why do all the gametes formed in human females have an X- chromosome?

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  14. Define Genetic engineering.

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  15. The degenerated wing of a Kiwi is an acquired character. Why is it an ...

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  16. (a) Differentiate Non-renewable and Renewable energy sources. (b) Li...

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  17. Under which conditions does the law of independent assortment hold goo...

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  18. How is a cancer cell different from a normal cell ?

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  19. (i) How do you differentiate Homologous organs from Analogous organs. ...

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  20. How are stem cells useful in regenerative process ?

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