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प्रश्न
Differentiate between genotype and phenotype.
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उत्तर
| Genotype | Phenotype | |
| 1. | It designates the genetic constitution of an individual, which determines the characters. Individuals of the same genotype interbreed and have the same phenotype if they are present in the same environment. | It designates the external appearance of an individual. Individuals of the same phenotype may appear alike but may not interbreed if genetically different. |
| 2. | Genotypes cannot be seen but can be found out by modern techniques like DNA fingerprinting. | Phenotypes can be observed directly in an individual. |
| 3. | Individuals possessing the same genotype usually have the same phenotypic expression. | Individuals who look alike, i.e., have the same phenotype, may or may not have the same genotype. |
| 4. | The genotypic ratio obtained in the F2 generation of a monohybrid cross is 1 : 2 : 1. | In the F2 generation of a monohybrid cross, the phenotypic ratio is 3 : 1. |
संबंधित प्रश्न
A heterozygous tall plant of pea is crossed with a dwarf plant of pea.
Calculate the phenotypic ratio of the progeny.
What is a gene? How is it related to heredity?
A pure tall plant (TT) is crossed with a pure dwarf plant (tt).
Draw Punnet squares to show
(1) F2 generation
(2) F2 generation.
Give Technical Term:
Differences occurring within offsprings of the same progeny.
Complete the following sentence with appropriate word:
______is the hereditary unit.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Genes are responsible for genetic characters.
Multiple Choice Question
Genetics is a branch of biology dealing with:
Multiple Choice Question
When an individual has both the genes of a contrasting character, it is said to be:
Which one of the following is back cross?
A recessive factor is altered by the presence of a dominant factor.
In a dihybrid cross with contrasting characters, the number of different genotypes obtained in F2 generation are ______.
______ type/s of gametes is/are expected to be formed by the organism with genotype AABBCC.
The appearance of new combinations in the F2 generation of a dihybrid cross proves the law of ______.
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?
Which one of the following character is recessive in case of a pea plant?
A pair of corresponding chromosomes of the same shape, size and one from each parent is called ______.
