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प्रश्न
Explain the Term Crossing-over.
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उत्तर
Crossing-over: The phenomenon of the exchange of genetic material between two non¬sister chromatids.
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संबंधित प्रश्न
The phenotypic ratio of incomplete dominance is ______.
A heterozygous tall plant of pea is crossed with a dwarf plant of pea.
Calculate the phenotypic ratio of the progeny.
Which phoenomenon gives 2 : 1 ratio instead of 3 : 1 ratio? Describe with graphical representation.
Give the significance of mutation.
Differentiate Between Homozygous shows Heterozygous.
Differentiate between genotype and phenotype.
Explain the term Alleles.
Give Technical Term:
Transmits characteristics from parents to offsprings.
Complete the following sentence with appropriate word:
______is the hereditary unit.
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:
Genes are responsible for genetic characters.
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.
Write the functional activity of the following structure:
Genes
Multiple Choice Question
A cross was made between tall and dwarf plants. In F1 generation all plants were tall, when the F1 plants were selfed, the tall and dwarf plants appeared in a 3 : 1 ratio in the F2 generation. This phenomenon is known as:
Which one of the following is back cross?
The appearance of new combinations in the F2 generation of a dihybrid cross proves the law of ______.
During a dihybrid cross with contrasting characters in the F2 generation, parental genotypes will appear in ______.
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)
Define the following term:
Gene
