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प्रश्न
Explain the Term Variation.
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उत्तर
Variation: Occurrence of differences in the progeny of the same parents and individuals of the same species.
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संबंधित प्रश्न
Mutation alerts the hereditary material. Give reasons.
Differentiate between genotype and phenotype.
Give the Phenotypic and Genotypic ratio of the F2 and F2 generation.
Explain the Term Heredity.
Complete the following sentence with appropriate word:
The physical expression of genes is called _________.
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:
Most genetic diseases in man are recessive in character.
Write the functional activity of the following structure:
Autosomes
Explain test cross with suitable example and state its ratios.
Hybrid is an offspring from a cross between genetically different parents.
______ type/s of gametes is/are expected to be formed by the organism with genotype AABBCC.
Two alternative forms of genes or alleles are located on ______.
Which of the following is the number of alleles for blood group in an individual?
Parents of blood group i and AB cannot have a child of blood group AB because ______.
Match the items given in Column I with those listed in Column II. Choose the answer with correct combination of alphabets of the two columns.
| Column I | Column II |
| A. Monohybrid cross | 1. T and t |
| B. Test cross | 2. TT |
| C. Alleles | 3. TT × tt |
| D. Homozygous tall | 4. tt |
| 5. Tt × tt |
An indvidual of genotype, Aa Bb Cc Dd is used in test cross. How many different phenotypes can appear in this progeny?
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)
A pair of corresponding chromosomes of the same shape, size and one from each parent is called ______.
