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प्रश्न
- A pure tall plant (TT) is crossed with a pure dwarf plant (tt). Draw Punnett squares to show
- F1, generation
- F2 generation.
- Give the phenotype of F2 generation.
- Give the phenotype and genotypic ratios of the F1 and F2 generations.
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उत्तर
- In the F2 generation, 75% of the plants will be tall, and 25% will be dwarf.
- F1 generation:
Phenotypic ratio: All tall plants
Genotypic ratio: All hybrids
F2 generation:
Phenotypic ratio: 3 : 1
Genotypic ratio: 1 : 2 : 1
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संबंधित प्रश्न
Choose the correct answer:
Mendel was born in __________
Mutation alerts the hereditary material. Give reasons.
Explain the term Alleles.
Name the following:
The study of heredity and variation.
Give Technical Term:
The individuals having dissimilar pairs of genes.
Complete the following sentence with appropriate word:
The dissimilar pairs of genes present in an individual are known as _______________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
A female is responsible for the sex of the progeny.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Mendel experimented upon plants of Oryza sativa.
Multiple choice question.
Phenotypic ratio of incomplete dominance in Mirabilis jalapa.
Multiple choice question.
A cross between an individual with an unknown genotype for a trait with recessive plant for that trait is _______.
What is allelomorph?
______ type/s of gametes is/are expected to be formed by the organism with genotype AABBCC.
Identify the genotype of a round seeded tall plant which when crossed with a plant of similar genotype produces the following percentage of phenotypes:
(tall round = 56.25 %, tall wrinkled = 18.75 %, dwarf round = 18.75 %, dwarf wrinkled = 6.25 %.)
A typical dihybrid cross is carried outbetween true breeding plant with yellowround seeds and a true breeding plant withgreen wrinkled seeds. With appropriatesymbol write the genotypes of —
- Homozygous dominant and recessive parents.
- Gametes produced by both the parents.
- Gametes produced by the F, hybrid. (3)
Which one of the following character is recessive in case of a pea plant?
Name any two genetic diseases in humans.
