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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
What is a gene? How is it related to heredity?
Give the Phenotypic and Genotypic ratio of the F2 and F2 generation.
Explain the term Alleles.
Give Technical Term:
A single egg was fertilized by a single sperm. But twins derived from that egg were born. What is the name of such type of twins?
Complete the following sentence with appropriate word:
______is the hereditary unit.
Complete the following sentence with appropriate word:
In mammals, the female is homozygous while the male is _________.
Multiple Choice Question
Genetics is a branch of biology dealing with:
Multiple choice question.
In a dihybrid cross, F2 generation offsprings show four different phenotypes while the genotypes are _______.
The word chromosome was coined by
Give any two points of difference between homozygous and heterozygous.
In a dihybrid cross with contrasting characters, the number of different genotypes obtained in F2 generation are ______.
The appearance of new combinations in the F2 generation of a dihybrid cross proves the law of ______.
Alleles refer to ____________.
The percentage of each gamete out of four different types of gametes produced by the F1 dihybrid will be ________.
During a dihybrid cross with contrasting characters in the F2 generation, parental genotypes will appear in ______.
Which of the following is the number of alleles for blood group in an individual?
A pair of corresponding chromosomes of the same shape, size and one from each parent is called ______.
