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Crossing over occurs during leptotene st...

Crossing over occurs during leptotene stage of meiosis.

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Crossing over occurs at

Synapsis occurs during pachytene stage of meiosis.

Assertion: The process of pairing of the chromosomes is called synapsis. Reason: Synapsis occurs during leptotene stage.

Crossing over brings about

Crossing over may result in:

Crossing over occurs between sister chromatids. True or False ?

In animals meiotic division occurs during gamete formation. This gametic meiosis results in

Which of the following events takes place during diplotene stage of prophase-I of meiosis?

Meiosis occur in

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  1. Alec Jeffreys determined the sequence of amino acids in proteins.

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  2. In humans, autosomes carry genes for determining sex.

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  3. Crossing over occurs during leptotene stage of meiosis.

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  4. Synapsis occurs during pachytene stage of meiosis.

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  5. The karyotype of Klinefelter syndrome is 45+XXY=48

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  6. The principles behind inheritance is called heredity.

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  7. The differences in phenotype of organisms due to the effect of environ...

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  8. Recessive character is lost in the F1 generation.

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  9. Gregor Mendel is called father of genetics.

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  10. Quantitative traits are monogenic.

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  11. Law of purity of gamete was derived from dihybrid cross.

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  12. The checker board used to determine the genotypes of offspring is call...

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  13. Back cross is a test for genotype of an organism with dominant phenoty...

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  14. Phenotypic ratio and genotypic ratio are the same in case of multiple ...

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  15. ABO blood group of humans is a case of quantitative inheritance.

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  16. Mention the advantages of selecting pea plant for experiment by Mendel...

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  17. Explain the law of dominance using a monohybrid cross.

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  18. Define and design a test-cross.

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  19. Using a Punnett square, work out the distribution of phenotypic featur...

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  20. When a cross is made between tall plant with yellow seeds(TtYy) and ta...

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