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प्रश्न
Give the significance of mutation.
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उत्तर
Mutation plays a significant role in evolution and speciation because it causes variability. However, some harmful mutations cause diseases.
संबंधित प्रश्न
A cross used to verify the unknown genotype of the F1 hybrid is a ______.
Differentiate between genotype and phenotype.
Explain the Term Variation.
Give Technical Term:
Differences occurring within offsprings of the same progeny.
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.
Choose the Odd One Out
Multiple Choice Question
Genetics is a branch of biology dealing with:
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:
Explain a dihybrid cross with suitable example and checker board method.
State whether the following is true or false.
Each gamete has only one allele of a gene.
In a dihybrid cross with contrasting characters, the number of different genotypes obtained in F2 generation are ______.
Identify the genotype of peacock.
Alleles refer to ____________.
A pea plant with the genotype YyRr is crossed with another pea plant with the genotype yyrr. The expected phenotypic ratio of individuals formed will be ______
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?
How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
