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A scientist wants his research student t...

A scientist wants his research student to find the genotype of the pea plant bearing purple flowers in the lab. Name and explain the cross that will make it possible.

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Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.

In peas, tallnessis dominant over dwarfness, and red colour of flowers is dominant over the white . colour. When a'tall plant bearing red flowers was pollinated with- a dwarf planfc bearing white flowers, the different phenotypic groups were obtained in the progeny in numbers mentioned against them: Tall, Red = 138 Tall, White = 132'Dwarf, Red =136 Dwarf,White =128 Mention the genotypes of the two parents and of the four offspring types.

A true breeding homozygous pea plant with gren pods and axial flowers as dominant characters is crossed with a recessive homozygous pea plant with yellow pods and terminal flowers. Generate Punnett's square to explain the above.

In a monohybrid cross of plants with red and white flowered plants, Mendel got only red flowered plants.On self pollinating these FI plants got both red and white flowered plants in 3:1 ratio.Explain the basis of using RR and rrsymbols to represent the genotype of plants of parental generation.

Questions based on paragraph A geneticist made a cross between two pea plants having axillary flowers (AA) and round shaped seeds (RR) with plants having terminal flowers (aa) and wrinkled seeds (rr). In F_1 generation, he obtained plants with axillary flowers and round shaped seeds. But in F generation, he obtained new combinations along with parental combinations. Mention the genotype of plants in F_2 generation obtained by geneticist.

Questions based on paragraph A geneticist made a cross between two pea plants having axillary flowers (AA) and round shaped seeds (RR) with plants having terminal flowers (aa) and wrinkled seeds (rr). In F_1 generation, he obtained plants with axillary flowers and round shaped seeds. But in F generation, he obtained new combinations along with parental combinations. Write the genotypic ratio of F_2 generation?

Conduct a cross between a homozygous pea plant for purple axial flowers and a homozygous pea plant for white terminal flowers: Find out the types of progeny in F_2 and the proportion in which they occur.

A true breeding homozygous pea plant with green pods and axial flowers as dominant characters is crossed with a recessive homozygous pea plant with yellow pods and terminal flowers. Mention the following Phenotype and genotype of F_1

CHETANA PUBLICATION-INHERITANCE AND VARIATION-Exercise
  1. A scientist wants his research student to find the genotype of the pea...

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  2. Phenotypic ratio of incomplete dominance in Mirabilis jalapa.

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  3. In dihybrid cross, F2 generation offsprings show four different phenot...

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  4. A cross between an individual with unkonwn genotype for a trait with r...

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  5. When phenotypic and genotypic ratios are the same, then it is an examp...

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  6. If the centromere is situated near the end of the chromosome, the chro...

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  7. Chromosomal theory of inheritance was proposed by ..........

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  8. If the genes are located in a chromosome as p-q-r-s-t, which of the fo...

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  9. Find the mis match pair :

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  10. A colourblind man maries a woman, who is homozygous for normal colour ...

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  11. Mendel performed experiment on .............

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  12. Which of the follwoing trait is dominant in Pisum sativum?

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  13. A cross between an individual with unkonwn genotype for a trait with r...

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  14. In dihybrid cross, F2 generation offsprings show four different phenot...

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  15. Emasculation is...........

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  16. When phenotypic and genotypic ratios are the same, then it is an examp...

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  17. A pea with yellow and round seeds is crossed with another pea plant wi...

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  18. When a single gene produces two effects and one of it is lethal then t...

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  19. When two genes control a single character and have cumulative effect t...

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  20. Genes located on the same locus but show different expression,

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  21. If the centromere is situated near the end of the chromosome, the chro...

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