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प्रश्न
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
DNA has a double-helical structure.
पर्याय
True
False
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उत्तर
True
संबंधित 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.
Explain the Term Crossing-over.
Give Technical Term:
A virus with DNA as heredity material.
Give Technical Term:
The individuals having dissimilar pairs of genes.
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 _______________.
Choose the Odd One Out
Multiple Choice Question
Genetics is a branch of biology dealing with:
Multiple choice question.
Phenotypic ratio of incomplete dominance in Mirabilis jalapa.
Multiple choice question.
In a dihybrid cross, F2 generation offsprings show four different phenotypes while the genotypes are _______.
Explain a dihybrid cross with suitable example and checker board method.
State whether the following is true or false.
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 ______.
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 |
