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प्रश्न
What is crossing-over? What are the factors affecting it?
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उत्तर
Crossing-over is the interchange of the parts of the chromatid of a pair of chromosomes. High temperature, X-rays and radiation treatment are the factors affecting crossing-over.
संबंधित प्रश्न
The phenotypic ratio of incomplete dominance is ______.
Choose the correct answer:
Mendel was born in __________
Explain the Term Crossing-over.
Explain the Term Recessive character.
Explain the Term Genotype.
Name the following:
The genetic composition of an organism.
Complete the following sentence with appropriate word:
The small differences among individuals are called ________.
Complete the following sentence with appropriate word:
Upon _______the diploid condition is restored.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
A female is responsible for the sex of the progeny.
Choose the Odd One Out
Multiple choice question.
In a dihybrid cross, F2 generation offsprings show four different phenotypes while the genotypes are _______.
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 possible genotypic ratio in F2 generation if a plant producing red flowers (RR) is crossed with another plant of the same species that produces white flower (rr).
Identify the genotype of a round seeded tall plant which when crossed with a plant of similar genotype produces the following percentage of phenotypes:
(tall round = 56.25 %, tall wrinkled = 18.75 %, dwarf round = 18.75 %, dwarf wrinkled = 6.25 %.)
During a dihybrid cross with contrasting characters in the F2 generation, parental genotypes will appear in ______.
What is dihybrid cross?
Define the following term:
Gene
